AI-generatedLos Alamos at a glance
- Best time
- Apr – May, Sep – Oct
- Warmest month
- Jul · 29°
- Sunshine a year
- 2,780 h
- Rain a year
- 489 mm
- Climate
- Temperate
- Time zone
- UTC−7 / UTC−6
- Elevation
- 2,198 m
Climate in Los Alamos
Los Alamos has a temperate climate with warm summers and cool winters. July is the warmest month with average highs of 29 °C, while January is the coolest at 5 °C. With around 2,780 hours of sunshine a year, Los Alamos is sunny; June is the sunniest month with 9.9 hours a day.
Holiday weather through the year
Best time to visit Los Alamos
The best time to visit Los Alamos is from April to May and from September to October. Hiking and mountain trips are best from April to May and from September to October, when the trails are largely free of snow. The wettest month is August with 75 mm of precipitation.
Los Alamos through the seasons
How the weather changes over the seasons, with averages for each.
Los Alamos in spring
Mar – May
Excellent
- 12–23 °C by day
- 8.5 h of sun a day
- 19 rainy days in all
Los Alamos in summer
Jun – Aug
Fair
- 28–29 °C by day
- 8.8 h of sun a day
- 32 rainy days in all
Los Alamos in autumn
Sep – Nov
Excellent
- 11–24 °C by day
- 7.0 h of sun a day
- 20 rainy days in all
Los Alamos in winter
Dec – Feb
Fair
- 5–7 °C by day
- 6.1 h of sun a day
- 15 rainy days in all
Which month for what?
Hiking & mountain trips
Apr – May, Sep – Oct
13–27 °C in the village, little snow
Snow
Nov – Mar
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Los Alamos for you.
Your best months: April – May, October
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Excellent
Best time to visit: April – May, September – October
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 6°
- Midday, 13:00: about 17°
- Afternoon, 16:00: about 17°
- Evening, 20:00: about 11°
- Night, 23:00: about 8°
07:1118:31
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 06:55–07:45 · evening 17:56–18:47
- Blue hour
- Morning 06:45–06:55 · evening 18:47–18:57
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 Los Alamos compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 21° at the start of the month to 14° at the end. The days get 1.1 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 21° | 14° |
| Night-time low | 6° | 0° |
| Daylight | 11.9 h | 10.8 h |
What is the weather like in Los Alamos in October?
In October, Los Alamos is mild: daytime highs average 18 °C, and nights cool down to about 4 °C. The sun shines for around 7.0 hours a day. Rain falls on about 7 days, adding up to 51 mm. All in all, October is an excellent month for a holiday in Los Alamos.
More details for October
- Daylight
- 11 h 20 min07:11 – 18:31
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 13 km/haverage daily peakAll months
- Cloud cover
- 30 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC−6offset from UTC
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %67 %
- Few rainy daysweight 30 %80 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in October
- Sunscreen
- A jumper for the evenings
Compare two months in Los Alamos
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
May has the better holiday weather in Los Alamos: score 95 against 87. In May, days are 5 °C warmer than in October. The sun shines 2 hours longer a day in May.
| Month | October | May |
|---|---|---|
| Holiday weather score | 87 | 95better |
| Daytime high | 18° | 23° |
| Night-time low | 4° | 7° |
| Sunshine | 7.0 h | 9.4 hbetter |
| Rainy days | 7 | 7 |
| Rainfall | 51 mm | 36 mmbetter |
Based on the climate averages 1996–2025.
Los Alamos month by month
The typical weather for every month at a glance.
39January5° · 6.1 h
In January, Los Alamos is cold: daytime highs average 5 °C, and nights often drop below freezing (−8 °C). Expect around 6.1 hours of sunshine a day. Rain is rare: about 5 days bring 25 mm in total. Snow falls on about 4 days. All in all, January is not an ideal month for a holiday in Los Alamos.
Los Alamos in January46February7° · 6.6 h
In February, Los Alamos is cold: daytime highs average 7 °C, and nights often drop below freezing (−6 °C). The sun shines for around 6.6 hours a day. Rain falls on about 6 days, adding up to 27 mm. Snow falls on about 4 days. All in all, February is a so-so month for a holiday in Los Alamos.
Los Alamos in February71March12° · 7.5 h
In March, Los Alamos is cool: daytime highs average 12 °C, and nights often drop below freezing (−2 °C). The sun shines for around 7.5 hours a day. Rain falls on about 7 days, adding up to 31 mm. Snow falls on about 3 days. All in all, March is a good month for a holiday in Los Alamos.
Los Alamos in March94April17° · 8.5 h
In April, Los Alamos is mild: daytime highs average 17 °C, and nights cool down to about 2 °C. The sun shines for around 8.5 hours a day. Rain falls on about 6 days, adding up to 30 mm. Snow falls on about 2 days. All in all, April is an excellent month for a holiday in Los Alamos.
Los Alamos in April95May23° · 9.4 h
In May, Los Alamos is warm: daytime highs average 23 °C, and nights cool down to about 7 °C. With around 9.4 hours of sunshine a day, there is plenty of sun. Rain falls on about 7 days, adding up to 36 mm. All in all, May is an excellent month for a holiday in Los Alamos.
Los Alamos in May70June29° · 9.9 h
In June, Los Alamos is hot: daytime highs average 29 °C, and nights cool down to about 12 °C. With around 9.9 hours of sunshine a day, there is plenty of sun. Rain falls on about 6 days, adding up to 32 mm. On about 12 days the thermometer climbs to 30 °C or more. All in all, June is a good month for a holiday in Los Alamos.
Los Alamos in June49July29° · 8.5 h
In July, Los Alamos is hot: daytime highs average 29 °C, and nights cool down to about 15 °C. The sun shines for around 8.5 hours a day. Rain is frequent, with about 13 rainy days and 69 mm in total. On about 13 days the thermometer climbs to 30 °C or more. All in all, July is a so-so month for a holiday in Los Alamos.
Los Alamos in July58August28° · 8.1 h
In August, Los Alamos is hot: daytime highs average 28 °C, and nights cool down to about 13 °C. The sun shines for around 8.1 hours a day. Rain is frequent, with about 13 rainy days and 75 mm in total. On about 8 days the thermometer climbs to 30 °C or more. All in all, August is a so-so month for a holiday in Los Alamos.
Los Alamos in August87September24° · 7.9 h
In September, Los Alamos is warm: daytime highs average 24 °C, and nights cool down to about 10 °C. The sun shines for around 7.9 hours a day. Rain falls on about 9 days, adding up to 64 mm. All in all, September is an excellent month for a holiday in Los Alamos.
Los Alamos in September87October18° · 7.0 h
In October, Los Alamos is mild: daytime highs average 18 °C, and nights cool down to about 4 °C. The sun shines for around 7.0 hours a day. Rain falls on about 7 days, adding up to 51 mm. All in all, October is an excellent month for a holiday in Los Alamos.
Los Alamos in October65November11° · 6.2 h
In November, Los Alamos is cool: daytime highs average 11 °C, and nights often drop below freezing (−2 °C). Expect around 6.2 hours of sunshine a day. Rain is rare: about 4 days bring 25 mm in total. Snow falls on about 2 days. All in all, November is a good month for a holiday in Los Alamos.
Los Alamos in November37December6° · 5.5 h
In December, Los Alamos is cold: daytime highs average 6 °C, and nights often drop below freezing (−7 °C). Expect around 5.5 hours of sunshine a day. Rain is rare: about 5 days bring 26 mm in total. Snow falls on about 4 days. All in all, December is not an ideal month for a holiday in Los Alamos.
Los Alamos in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Los Alamos
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°
ColdOctober: nights around 4°. The room should be heated.
The coolest nights are in January (−8°), the warmest in July (15°). Nights are pleasant for sleeping (15 to 20 °C) in July. Nights fall below 8 °C on average from October 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 | 39 | 5° | −8° | 6.1 h | 5 | 25 |
| FebruaryFeb | 46 | 7° | −6° | 6.6 h | 6 | 27 |
| MarchMar | 71 | 12° | −2° | 7.5 h | 7 | 31 |
| AprilApr | 94 | 17° | 2° | 8.5 h | 6 | 30 |
| MayMay | 95 | 23° | 7° | 9.4 h | 7 | 36 |
| JuneJun | 70 | 29° | 12° | 9.9 h | 6 | 32 |
| JulyJul | 49 | 29° | 15° | 8.5 h | 13 | 69 |
| AugustAug | 58 | 28° | 13° | 8.1 h | 13 | 75 |
| SeptemberSep | 87 | 24° | 10° | 7.9 h | 9 | 64 |
| OctoberOct | 87 | 18° | 4° | 7.0 h | 7 | 51 |
| NovemberNov | 65 | 11° | −2° | 6.2 h | 4 | 25 |
| DecemberDec | 37 | 6° | −7° | 5.5 h | 5 | 26 |
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
35.89° N, 106.31° W · 2,198 m · America/Denver
Sunshine
Sunshine hours in Los Alamos
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 7.0 of 11.3 hours of daylight in Los Alamos, 62 % 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
Rain in Los Alamos: 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, Los Alamos has about 7 rainy days with 51 mm of rain in total.
UV index
UV index in Los Alamos
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 6 · highSeek shade around midday; sunscreen SPF 30+, hat and sunglasses.
The sun is strongest in June (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 30 min
- Light brown skin
- about 40 min
- Olive skin
- about 50 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 & clouds
Wind and clouds in Los Alamos
How breezy and how cloudy Los Alamos 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 Los Alamos typically peaks at 13 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 30 % of the sky over Los Alamos: mostly sunny, with about 7.0 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 & humidity
Heat and humidity in Los Alamos
How often the day gets hot in Los Alamos (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, Los Alamos has about 0 hot days, with an average daytime high of 18 °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
Snow in Los Alamos
Snow is possible in Los Alamos, 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, Los Alamos has about 1 day with at least 1 cm of fresh snow, 3 cm in total. The chance of seeing snow during a week's stay is 8 out of 100: hardly any.
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 Los Alamos
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Los Alamos 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.
Los Alamos has its best school-holiday weather during May half-term (score 90) and its weakest during the Christmas holidays (score 38).
- 87
Easter holidays
Mar – Apr
Excellent
- 16 °C by day
- 8.2 h of sun a day
- 6 rainy days a month
Keep in mind: Snow
- 90
May half-term
May – Jun
ExcellentBest holidays
- 24 °C by day
- 9.5 h of sun a day
- 6 rainy days a month
Good for: Sightseeing & walks
- 55
Summer holidays
Jul – Aug
Fair
- 28 °C by day
- 8.2 h of sun a day
- 13 rainy days a month
- 87
October half-term
Oct
Excellent
- 18 °C by day
- 7.0 h of sun a day
- 7 rainy days a month
Good for: Sightseeing & walks
- 38
Christmas holidays
Dec – Jan
Poor
- 5 °C by day
- 5.8 h of sun a day
- 5 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 10 h 5 min
- Distance
- 7,930 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.
Good to know: USA
- Currency
- US Dollar (USD)
- Languages
- English, Spanish
- Sockets
- Type A, B · 120 V
- Traffic
- Drives on the right
- Dialling code
- +1
- Emergency number
- 911
UK plugs need a travel adapter
Only 120 V: chargers marked 100–240 V work, other devices need a voltage converter.
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Los Alamos compared
Put Los Alamos side by side with another destination.
Los Alamos vs Santa Fe
In October Santa Fe has the better holiday weather (score 92 vs 87). During the day it is about as warm in Santa Fe as in Los Alamos.
| in October | Los Alamos | Santa Fe |
|---|---|---|
| Holiday weather score | 87 | 92 |
| Daytime high | 18° | 18° |
| Sunshine | 7 h | 7 h |
| Rainy days | 7 | 5 |
| Best time | Apr – May, Sep – Oct | Apr – May, Sep – Oct |
Through the year
Best places in the country
USA in October: the best places
In October, Los Alamos ranks 11 among the 31 nearest destinations in this country.
- El Paso27°97
- 2Page (Lake Powell)22°96
- 3Sedona24°96
- 4Albuquerque22°94
- 5Moab22°94
- 6Las Vegas28°94
- 7Flagstaff (Grand Canyon)19°93
- 8Santa Fe18°92
- 11Los AlamosThis page18°87
Places nearby
Near Los Alamos
Other destinations close by.
Places with a similar climate
Places with a climate like Los Alamos
Destinations whose weather through the year is closest to Los Alamos's – good alternatives.
Frequently asked questions about Los Alamos
When is the best time to visit Los Alamos?
The best time to visit Los Alamos is from April to May and from September to October. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Los Alamos?
July is the warmest month, with average highs of 29 °C and nights around 15 °C. January is the coolest month at 5 °C.
When does it rain most in Los Alamos?
The wettest month is August with 75 mm of precipitation. The driest month is January with 25 mm.
How many hours of sunshine does Los Alamos get?
Los Alamos gets around 2,780 hours of sunshine a year. The sunniest month is June with 9.9 hours a day; in December there are 5.5 hours a day.
What time zone is Los Alamos in?
Los Alamos is on UTC−7 in January and UTC−6 in July.
How long is the flight from London to Los Alamos?
A nonstop flight from London to Los Alamos takes about 10 h 5 min, for a straight-line distance of about 7,930 km.
Which school holidays are best for Los Alamos?
Los Alamos has its best school-holiday weather during May half-term (score 90) and its weakest during the Christmas holidays (score 38). Holiday ratings (0–100): Easter holidays 87, May half-term 90, summer holidays 55, October half-term 87, Christmas holidays 38.