AI-generatedHarrisburg at a glance
- Best time
- Apr – Jun, Aug – Oct
- Warmest month
- Jul · 31°
- Sunshine a year
- 2,100 h
- Rain a year
- 1,083 mm
- Climate
- Continental
- Time zone
- UTC−5 / UTC−4
- Elevation
- 101 m
Climate in Harrisburg
Harrisburg has warm to hot summers and cold winters with occasional snow. July is the warmest month with average highs of 31 °C, while January is the coolest at 4 °C. With around 2,100 hours of sunshine a year, Harrisburg is moderately sunny; July is the sunniest month with 7.9 hours a day.
Holiday weather through the year
Best time to visit Harrisburg
The best time to visit Harrisburg is from April to June and from August to October. In August, September and October, though, the hurricane season is at its peak: check the forecast before you go. For sightseeing, day trips and hiking, conditions are most comfortable in April and from September to October. The wettest month is September with 109 mm of precipitation.
Harrisburg through the seasons
How the weather changes over the seasons, with averages for each.
Harrisburg in spring
Mar – May
Good
- 11–23 °C by day
- 6.1 h of sun a day
- 34 rainy days in all
Harrisburg in summer
Jun – Aug
Good
- 28–31 °C by day
- 7.4 h of sun a day
- 32 rainy days in all
Harrisburg in autumn
Sep – Nov
Good
- 12–26 °C by day
- 5.2 h of sun a day
- 26 rainy days in all
Harrisburg in winter
Dec – Feb
Poor
- 4–7 °C by day
- 4.2 h of sun a day
- 28 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Apr, Sep – Oct
15–28 °C and not too much rain
Snow
Dec – Mar
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Harrisburg for you.
Your best months: May, September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: April – June, August – October
October is the peak of the hurricane season Hurricane season
Good forSightseeing & walks
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 10°
- Midday, 13:00: about 18°
- Afternoon, 16:00: about 19°
- Evening, 20:00: about 14°
- Night, 23:00: about 12°
07:1718:29
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:00–07:54 · evening 17:53–18:46
- Blue hour
- Morning 06:49–07:00 · evening 18:46–18:57
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Harrisburg compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 22° at the start of the month to 16° at the end. The days get 1.2 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 22° | 16° |
| Night-time low | 11° | 5° |
| Daylight | 11.8 h | 10.6 h |
What is the weather like in Harrisburg in October?
In October, Harrisburg is mild: daytime highs average 19 °C, and nights cool down to about 8 °C. Expect around 5.1 hours of sunshine a day. Rain falls on about 9 days, adding up to 87 mm. All in all, October is a good month for a holiday in Harrisburg.
More details for October
- Daylight
- 11 h 13 min07:17 – 18:29
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 53 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−4offset from UTC
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %35 %
- Few rainy daysweight 30 %68 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Harrisburg
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and September bring similar holiday weather to Harrisburg (score 77 and 79). In September, days are 7 °C warmer than in October. The sun shines an hour longer a day in September.
| Month | October | September |
|---|---|---|
| Holiday weather score | 77 | 79 |
| Daytime high | 19° | 26° |
| Night-time low | 8° | 15° |
| Sunshine | 5.1 h | 5.8 hbetter |
| Rainy days | 9 | 9 |
| Rainfall | 87 mmbetter | 109 mm |
| Muggy days | 1better | 6 |
Based on the climate averages 1996–2025.
Harrisburg month by month
The typical weather for every month at a glance.
22January4° · 4.1 h
In January, Harrisburg is cold: daytime highs average 4 °C, and nights often drop below freezing (−5 °C). Expect around 4.1 hours of sunshine a day. Precipitation falls on about 9 days, totalling 86 mm; on about 3 of them it snows. All in all, January is not an ideal month for a holiday in Harrisburg.
Harrisburg in January24February6° · 4.8 h
In February, Harrisburg is cold: daytime highs average 6 °C, and nights often drop below freezing (−4 °C). Expect around 4.8 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 77 mm in total. Snow falls on about 4 days. All in all, February is not an ideal month for a holiday in Harrisburg.
Harrisburg in February39March11° · 5.5 h
In March, Harrisburg is cool: daytime highs average 11 °C, and nights cool down to about 0 °C. Expect around 5.5 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 90 mm in total. Snow falls on about 2 days. All in all, March is not an ideal month for a holiday in Harrisburg.
Harrisburg in March75April18° · 6.3 h
In April, Harrisburg is mild: daytime highs average 18 °C, and nights cool down to about 6 °C. Expect around 6.3 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 97 mm in total. All in all, April is a good month for a holiday in Harrisburg.
Harrisburg in April74May23° · 6.6 h
In May, Harrisburg is warm: daytime highs average 23 °C, and nights cool down to about 12 °C. The sun shines for around 6.6 hours a day. Rain is frequent, with about 12 rainy days and 99 mm in total. All in all, May is a good month for a holiday in Harrisburg.
Harrisburg in May71June28° · 7.5 h
In June, Harrisburg is hot: daytime highs average 28 °C, and nights cool down to about 17 °C. The sun shines for around 7.5 hours a day. Rain is frequent, with about 12 rainy days and 93 mm in total. On about 10 days the thermometer climbs to 30 °C or more. All in all, June is a good month for a holiday in Harrisburg.
Harrisburg in June60July31° · 7.9 h
In July, Harrisburg is hot: daytime highs average 31 °C, and even at night it stays warm at around 20 °C. The sun shines for around 7.9 hours a day. Rain is frequent, with about 10 rainy days and 92 mm in total. On about 18 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a good month for a holiday in Harrisburg.
Harrisburg in July64August30° · 6.8 h
In August, Harrisburg is hot: daytime highs average 30 °C, and nights cool down to about 19 °C. The sun shines for around 6.8 hours a day. Rain is frequent, with about 10 rainy days and 86 mm in total. On about 14 days the thermometer climbs to 30 °C or more. All in all, August is a good month for a holiday in Harrisburg.
Harrisburg in August79September26° · 5.8 h
In September, Harrisburg is warm: daytime highs average 26 °C, and nights cool down to about 15 °C. Expect around 5.8 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 109 mm in total. All in all, September is a good month for a holiday in Harrisburg.
Harrisburg in September77October19° · 5.1 h
In October, Harrisburg is mild: daytime highs average 19 °C, and nights cool down to about 8 °C. Expect around 5.1 hours of sunshine a day. Rain falls on about 9 days, adding up to 87 mm. All in all, October is a good month for a holiday in Harrisburg.
Harrisburg in October49November12° · 4.7 h
In November, Harrisburg is cool: daytime highs average 12 °C, and nights cool down to about 2 °C. Expect around 4.7 hours of sunshine a day. Rain falls on about 8 days, adding up to 74 mm. All in all, November is a so-so month for a holiday in Harrisburg.
Harrisburg in November21December7° · 3.7 h
In December, Harrisburg is cold: daytime highs average 7 °C, and nights often drop below freezing (−2 °C). The sun is scarce, with only about 3.7 hours a day. Rain is frequent, with about 9 rainy days and 93 mm in total. Snow falls on about 2 days. All in all, December is not an ideal month for a holiday in Harrisburg.
Harrisburg in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Harrisburg
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- muggy month (15+ muggy days)
CoolOctober: nights around 8°. A duvet at night and a jumper for the evening. Muggy on about 1 day (dew point 18 °C or more).
The coolest nights are in January (−5°), the warmest in July (20°). Tropical nights of 20 °C and more are the rule in July; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in June and from August to September. Nights fall below 8 °C on average from November to April, so the room should be heated. It is muggy (dew point 18 °C or more) on about 45 days a year, mostly in July.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 22 | 4° | −5° | 4.1 h | 9 | 86 |
| FebruaryFeb | 24 | 6° | −4° | 4.8 h | 10 | 77 |
| MarchMar | 39 | 11° | 0° | 5.5 h | 10 | 90 |
| AprilApr | 75 | 18° | 6° | 6.3 h | 11 | 97 |
| MayMay | 74 | 23° | 12° | 6.6 h | 12 | 99 |
| JuneJun | 71 | 28° | 17° | 7.5 h | 12 | 93 |
| JulyJul | 60 | 31° | 20° | 7.9 h | 10 | 92 |
| AugustAug | 64 | 30° | 19° | 6.8 h | 10 | 86 |
| SeptemberSep | 79 | 26° | 15° | 5.8 h | 9 | 109 |
| OctoberOct | 77 | 19° | 8° | 5.1 h | 9 | 87 |
| NovemberNov | 49 | 12° | 2° | 4.7 h | 8 | 74 |
| DecemberDec | 21 | 7° | −2° | 3.7 h | 9 | 93 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
40.27° N, 76.88° W · 101 m · America/New_York
Sunshine hours in Harrisburg
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 5.1 of 11.2 hours of daylight in Harrisburg, 46 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Harrisburg: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Harrisburg has about 9 rainy days with 87 mm of rain in total.
UV index in Harrisburg
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 4 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 10).
Minutes until sunburn in October
- Very fair skin
- about 35 min
- Fair skin
- about 40 min
- Light brown skin
- about 60 min
- Olive skin
- about 75 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Harrisburg
How breezy and how cloudy Harrisburg is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Harrisburg typically peaks at 15 km/h during the day: Beaufort 3, gentle breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 53 % of the sky over Harrisburg: variable cloud, with about 5.1 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Harrisburg
How often the day gets hot in Harrisburg (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Harrisburg has about 0 hot days, with an average daytime high of 19 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Harrisburg
Snow is possible in Harrisburg, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Harrisburg.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Harrisburg
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Harrisburg in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Harrisburg has its best school-holiday weather during October half-term (score 77) and its weakest during the Christmas holidays (score 22).
- 64
Easter holidays
Mar – Apr
Good
- 16 °C by day
- 6.1 h of sun a day
- 11 rainy days a month
Keep in mind: Snow
- 73
May half-term
May – Jun
Good
- 24 °C by day
- 6.8 h of sun a day
- 12 rainy days a month
- 63
Summer holidays
Jul – Aug
Good
- 30 °C by day
- 7.2 h of sun a day
- 10 rainy days a month
Keep in mind: Storm season
- 77
October half-term
Oct
GoodBest holidays
- 19 °C by day
- 5.1 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
Keep in mind: Storm season
- 22
Christmas holidays
Dec – Jan
Poor
- 5 °C by day
- 3.9 h of sun a day
- 9 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 7 h 25 min
- Distance
- 5,770 km
- Time zone
- UTC−4
- Jet lag
- About 3 days (5 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Harrisburg lies in an area that Atlantic hurricanes can reach. The hurricane season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.
Compare & alternatives
Harrisburg compared
Put Harrisburg side by side with another destination.
Harrisburg vs Baltimore
In October the holiday weather in Harrisburg and Baltimore is about equally good (score 77 vs 79). During the day Baltimore is 2 °C warmer than Harrisburg. Baltimore gets one more hour of sunshine a day.
| in October | Harrisburg | Baltimore |
|---|---|---|
| Holiday weather score | 77 | 79 |
| Daytime high | 19° | 21° |
| Sea | no sea nearby | 18° |
| Sunshine | 5 h | 6 h |
| Rainy days | 9 | 8 |
| Best time | Apr – Jun, Aug – Oct | Apr – Jun, Sep – Oct |
Through the year
USA in October: the best places
In October, Harrisburg ranks 8 among the 31 nearest destinations in this country.
- Richmond22°82
- 2Norfolk23°20°82
- 3Washington21°19°81
- 4Alexandria21°19°81
- 5Baltimore21°18°79
- 6Philadelphia20°18°79
- 7New York19°18°78
- 8HarrisburgThis page19°77
Near Harrisburg
Other destinations close by.
Places with a climate like Harrisburg
Destinations whose weather through the year is closest to Harrisburg's – good alternatives.
Frequently asked questions about Harrisburg
When is the best time to visit Harrisburg?
The best time to visit Harrisburg is from April to June and from August to October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Harrisburg?
July is the warmest month, with average highs of 31 °C and nights around 20 °C. January is the coolest month at 4 °C.
When does it rain most in Harrisburg?
The wettest month is September with 109 mm of precipitation. The driest month is November with 74 mm.
How many hours of sunshine does Harrisburg get?
Harrisburg gets around 2,100 hours of sunshine a year. The sunniest month is July with 7.9 hours a day; in December there are 3.7 hours a day.
What time zone is Harrisburg in?
Harrisburg is on UTC−5 in January and UTC−4 in July.
How long is the flight from London to Harrisburg?
A nonstop flight from London to Harrisburg takes about 7 h 25 min, for a straight-line distance of about 5,770 km.
When is hurricane season in Harrisburg?
Harrisburg lies in an area that Atlantic hurricanes can reach. The hurricane season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Harrisburg?
Harrisburg has its best school-holiday weather during October half-term (score 77) and its weakest during the Christmas holidays (score 22). Holiday ratings (0–100): Easter holidays 64, May half-term 73, summer holidays 63, October half-term 77, Christmas holidays 22.