AI-generatedCalgary at a glance
- Best time
- Jun – Sep
- Warmest month
- Jul · 23°
- Sunshine a year
- 2,330 h
- Rain a year
- 473 mm
- Climate
- Mountain
- Time zone
- UTC−7 / UTC−6
- Elevation
- 1,048 m
Climate in Calgary
Calgary has a mountain climate: summers are fresh, winters cold and snowy. July is the warmest month with average highs of 23 °C, while December is the coolest at −3 °C. With around 2,330 hours of sunshine a year, Calgary is sunny; July is the sunniest month with 9.8 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Fair
Best time to visit: June – September
A typical day in October
- Morning, 08:00: about -1°
- Midday, 13:00: about 9°
- Afternoon, 16:00: about 10°
- Evening, 20:00: about 6°
- Night, 23:00: about 3°
07:5818:46
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:37–08:43 · evening 18:01–19:07
- Blue hour
- Morning 07:24–07:37 · evening 19:07–19:19
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.
What is the weather like in Calgary in October?
In October, Calgary is cool: daytime highs average 11 °C, and nights often drop below freezing (−1 °C). Expect around 5 hours of sunshine a day. Rain falls on about 6 days, adding up to 23 mm. Snow falls on about 2 days. All in all, October is a so-so month for a holiday in Calgary.
More details for October
- Daylight
- 10 h 49 min07:58 – 18:46
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 55 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 2 days1 cm or more of fresh snowAll months
- Time zone
- UTC−6America/Edmonton
How the score comes together
- Temperatureweight 50 %26 %
- Sunshineweight 20 %40 %
- Few rainy daysweight 30 %89 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
Sunshine hours in Calgary
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 5.4 of 10.8 hours of daylight in Calgary, 50 % of the day.
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.
UV index in Calgary
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 8).
Minutes until sunburn in October
- Very fair skin
- about 60 min
- Fair skin
- about 80 min
- Light brown skin
- about 110 min
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, 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.
Rain in Calgary: 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, Calgary has about 6 rainy days with 23 mm of rain in total.
Wind and clouds in Calgary
How breezy and how cloudy Calgary 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 Calgary typically peaks at 16 km/h during the day: Beaufort 3, light breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 55 % of the sky over Calgary: variable cloud, with about 5.4 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 Calgary
How often the day gets hot in Calgary (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, Calgary has about 0 hot days, with an average daytime high of 11 °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 Calgary
When Calgary is likely to be white: 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, Calgary has about 2 days with at least 1 cm of fresh snow, 8 cm in total. The chance of seeing snow during a week's stay is 23 out of 100: possible.
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.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Calgary
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°
FrostOctober: nights around −1°. Heating and warm bedding are a must.
The coolest nights are in January (−13°), the warmest in July (11°). Nights fall below 8 °C on average from September to May, so the room should be heated.
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 | 33 | −3° | −13° | 3.8 h | 4 | 12 |
| FebruaryFeb | 37 | −1° | −12° | 5.1 h | 4 | 13 |
| MarchMar | 36 | 4° | −8° | 6.0 h | 6 | 22 |
| AprilApr | 45 | 10° | −3° | 7.1 h | 8 | 38 |
| MayMay | 70 | 16° | 3° | 7.9 h | 11 | 68 |
| JuneJun | 78 | 20° | 8° | 8.5 h | 14 | 102 |
| JulyJul | 85 | 23° | 11° | 9.8 h | 11 | 61 |
| AugustAug | 87 | 23° | 10° | 8.5 h | 9 | 58 |
| SeptemberSep | 85 | 18° | 6° | 6.9 h | 8 | 41 |
| OctoberOct | 48 | 11° | −1° | 5.4 h | 6 | 23 |
| NovemberNov | 31 | 2° | −7° | 3.9 h | 5 | 20 |
| DecemberDec | 31 | −3° | −13° | 3.5 h | 4 | 15 |
Climate averages 1996–2025, 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
51.05° N, 114.09° W · 1,048 m · America/Edmonton
Best time to visit Calgary
The best time to visit Calgary is from June to September. For sightseeing, day trips and hiking, conditions are most comfortable in May and from July to September. The wettest month is June with 102 mm of precipitation.
Calgary through the seasons
How the weather changes over the seasons, with averages for each.
Calgary in spring
Mar – May
Fair
- 4–16 °C by day
- 7 h of sun a day
- 25 rainy days in all
Calgary in summer
Jun – Aug
Excellent
- 20–23 °C by day
- 9 h of sun a day
- 34 rainy days in all
Calgary in autumn
Sep – Nov
Fair
- 2–18 °C by day
- 5 h of sun a day
- 18 rainy days in all
Calgary in winter
Dec – Feb
Poor
- -3–-1 °C by day
- 4 h of sun a day
- 12 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Calgary for you.
Your best months: July – August
Based on the climate averages; tap a month to see its details.
Compare two months in Calgary
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
August has the better holiday weather in Calgary: score 87 against 48. In August, days are 12 °C warmer than in October. August has 3 more rainy days. The sun shines 3 hours longer a day in August.
| Month | October | August |
|---|---|---|
| Weather score | 48 | 87better |
| Day high | 11° | 23° |
| Night low | −1° | 10° |
| Sunshine | 5.4 h | 8.5 hbetter |
| Rainy days | 6better | 9 |
| Rainfall | 23 mmbetter | 58 mm |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May, Jul – Sep
15–28 °C and not too much rain
Rainy months
Jun
12 or more rainy days
Snow
Nov – Apr
Snow on 2 or more days
Calgary month by month
The typical weather for every month at a glance.
33January-3° · 4 h
In January, Calgary is freezing cold: daytime highs average −3 °C, and nights often drop below freezing (−13 °C). The sun is scarce, with only about 4 hours a day. Precipitation, often as snow, falls on about 4 days, totalling 12 mm. Snow falls on about 3 days. All in all, January is not an ideal month for a holiday in Calgary.
Calgary in January37February-1° · 5 h
In February, Calgary is freezing cold: daytime highs average −1 °C, and nights often drop below freezing (−12 °C). Expect around 5 hours of sunshine a day. Precipitation, often as snow, falls on about 4 days, totalling 13 mm. Snow falls on about 4 days. All in all, February is not an ideal month for a holiday in Calgary.
Calgary in February36March4° · 6 h
In March, Calgary is cold: daytime highs average 4 °C, and nights often drop below freezing (−8 °C). Expect around 6 hours of sunshine a day. Precipitation, often as snow, falls on about 6 days, totalling 22 mm. Snow falls on about 4 days. All in all, March is not an ideal month for a holiday in Calgary.
Calgary in March45April10° · 7 h
In April, Calgary is cool: daytime highs average 10 °C, and nights often drop below freezing (−3 °C). The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 38 mm. Snow falls on about 4 days. All in all, April is a so-so month for a holiday in Calgary.
Calgary in April70May16° · 8 h
In May, Calgary is cool: daytime highs average 16 °C, and nights cool down to about 3 °C. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 68 mm in total. Snow falls on about 2 days. All in all, May is a good month for a holiday in Calgary.
Calgary in May78June20° · 9 h
In June, Calgary is mild: daytime highs average 20 °C, and nights cool down to about 8 °C. The sun shines for around 9 hours a day. Rain is frequent, with about 14 rainy days and 102 mm in total. All in all, June is a good month for a holiday in Calgary.
Calgary in June85July23° · 10 h
In July, Calgary is warm: daytime highs average 23 °C, and nights cool down to about 11 °C. With around 10 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 11 rainy days and 61 mm in total. All in all, July is an excellent month for a holiday in Calgary.
Calgary in July87August23° · 9 h
In August, Calgary is warm: daytime highs average 23 °C, and nights cool down to about 10 °C. The sun shines for around 9 hours a day. Rain is frequent, with about 9 rainy days and 58 mm in total. All in all, August is an excellent month for a holiday in Calgary.
Calgary in August85September18° · 7 h
In September, Calgary is mild: daytime highs average 18 °C, and nights cool down to about 6 °C. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 41 mm. All in all, September is an excellent month for a holiday in Calgary.
Calgary in September48October11° · 5 h
In October, Calgary is cool: daytime highs average 11 °C, and nights often drop below freezing (−1 °C). Expect around 5 hours of sunshine a day. Rain falls on about 6 days, adding up to 23 mm. Snow falls on about 2 days. All in all, October is a so-so month for a holiday in Calgary.
Calgary in October31November2° · 4 h
In November, Calgary is freezing cold: daytime highs average 2 °C, and nights often drop below freezing (−7 °C). The sun is scarce, with only about 4 hours a day. Precipitation, often as snow, falls on about 5 days, totalling 20 mm. Snow falls on about 4 days. All in all, November is not an ideal month for a holiday in Calgary.
Calgary in November31December-3° · 4 h
In December, Calgary is freezing cold: daytime highs average −3 °C, and nights often drop below freezing (−13 °C). The sun is scarce, with only about 4 hours a day. Precipitation, often as snow, falls on about 4 days, totalling 15 mm. Snow falls on about 4 days. All in all, December is not an ideal month for a holiday in Calgary.
Calgary in DecemberCalgary compared
Put Calgary side by side with another destination.
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Calgary vs. Canmore
In October Calgary has the better holiday weather (score 48 vs. 30). During the day Canmore is 3 °C cooler than Calgary.
| in October | Calgary | Canmore |
|---|---|---|
| Holiday score | 48 | 30 |
| Daytime high | 11° | 8° |
| Sunshine | 5 h | 5 h |
| Rainy days | 6 | 7 |
| Best time | Jun – Sep | Jun – Sep |
Through the year
Canada in October: the best places
In October, Calgary ranks 5 among the 31 nearest destinations in this country.
- Osoyoos (Okanagan)14°58
- 2Kelowna14°57
- 3Summerland13°54
- 4Penticton (Okanagan)14°54
- 5CalgaryThis page11°48
- 6Kamloops13°44
- 7Saskatoon10°41
- 8Regina10°40
Planning a trip to Calgary
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Calgary 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.
Calgary has its best school-holiday weather during the summer holidays (score 86) and its weakest during the Christmas holidays (score 32).
- 42
Easter holidays
Mar – Apr
Fair
- 8 °C by day
- 6.8 h of sun a day
- 7 rainy days a month
Keep in mind: Snow
- 72
May half-term
May – Jun
Good
- 17 °C by day
- 8.0 h of sun a day
- 12 rainy days a month
Good for: Sightseeing & walks
- 86
Summer holidays
Jul – Aug
ExcellentBest holidays
- 23 °C by day
- 9.0 h of sun a day
- 10 rainy days a month
Good for: Sightseeing & walks
- 48
October half-term
Oct
Fair
- 11 °C by day
- 5.4 h of sun a day
- 6 rainy days a month
- 32
Christmas holidays
Dec – Jan
Poor
- −3 °C by day
- 3.7 h of sun a day
- 4 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 9 h
- Distance
- 7,020 km
- Time zone
- UTC−6
- Jet lag
- About 5 days (7 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.
Frequently asked questions about Calgary
When is the best time to visit Calgary?
The best time to visit Calgary is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Calgary?
July is the warmest month, with average highs of 23 °C and nights around 11 °C. December is the coolest month at −3 °C.
When does it rain most in Calgary?
The wettest month is June with 102 mm of precipitation. The driest month is January with 12 mm.
How many hours of sunshine does Calgary get?
Calgary gets around 2,330 hours of sunshine a year. The sunniest month is July with 9.8 hours a day; in December there are 3.5 hours a day.
What time zone is Calgary in?
Calgary uses the time zone America/Edmonton: UTC−7 in January and UTC−6 in July.
How long is the flight from London to Calgary?
A nonstop flight from London to Calgary takes about 9 h, for a straight-line distance of about 7,020 km.
Which school holidays are best for Calgary?
Calgary has its best school-holiday weather during the summer holidays (score 86) and its weakest during the Christmas holidays (score 32). Holiday ratings (0–100): Easter holidays 42, May half-term 72, Summer holidays 86, October half-term 48, Christmas holidays 32.
Near Calgary
Other destinations close by.
Places with a climate like Calgary
Destinations whose weather through the year is closest to Calgary's – good alternatives.