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Climate · United States

Big Sky

Warm and damp from June to September; cold and damp from November to March.

Typical weather, averaged over 30 years45.3°N2,134 m above the sea
  1. Jan30°-1°9°-13°Rain on about three days a week.
  2. Feb32°0°11°-12°Rain on about three days a week.
  3. Mar38°3°15°-9°Rain on about three days a week.
  4. Apr45°7°21°-6°Rain on about four days a week.
  5. May53°12°29°-2°Rain on about four days a week.
  6. Jun67°19°38°3°Rain on about four days a week.
  7. Jul78°26°48°9°Rain on about three days a week.
  8. Aug78°26°48°9°Rain on about three days a week.
  9. Sep68°20°40°4°Rain on about three days a week.
  10. Oct55°13°29°-2°Rain on about three days a week.
  11. Nov40°4°16°-9°Rain on about three days a week.
  12. Dec29°-2°9°-13°Rain on about three days a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The best months

The warm season runs from June to September, with highs near 73°F and nights near 44°F. From November to March, highs are nearer 34°F. The rain and snow come from April to June, on about four days a week. July to January is the driest stretch, with rain or snow on about three days a week. Daylight runs from about 9 hours in December to 15½ hours in June.The warm season runs from June to September, with highs near 23°C and nights near 7°C. From November to March, highs are nearer 1°C. The rain and snow come from April to June, on about four days a week. July to January is the driest stretch, with rain or snow on about three days a week. Daylight runs from about 9 hours in December to 15½ hours in June.

Where Big Sky sits

America/Denver
this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
45.3°Nnorthern hemisphere
Above the sea
2,134 mhigh country
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
8:01 AM7:28 AM7:40 AM6:42 AM5:56 AM5:37 AM5:51 AM6:25 AM7:02 AM7:40 AM7:23 AM7:57 AMsets 5:07 PMsets 5:51 PMsets 7:30 PMsets 8:09 PMsets 8:46 PMsets 9:14 PMsets 9:11 PMsets 8:35 PMsets 7:39 PMsets 6:42 PMsets 4:57 PMsets 4:43 PM
Nearest of ours
Moose176 km south

The land around Big Sky, shaded by its typical high in January, the planning map's own layer.The land around Big Sky, shaded by its typical high in February, the planning map's own layer.The land around Big Sky, shaded by its typical high in March, the planning map's own layer.The land around Big Sky, shaded by its typical high in April, the planning map's own layer.The land around Big Sky, shaded by its typical high in May, the planning map's own layer.The land around Big Sky, shaded by its typical high in June, the planning map's own layer.The land around Big Sky, shaded by its typical high in July, the planning map's own layer.The land around Big Sky, shaded by its typical high in August, the planning map's own layer.The land around Big Sky, shaded by its typical high in September, the planning map's own layer.The land around Big Sky, shaded by its typical high in October, the planning map's own layer.The land around Big Sky, shaded by its typical high in November, the planning map's own layer.The land around Big Sky, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Through the year

week by week

Temperature

Highs from 29°F in December to 78°F in July and August.Highs from -2°C in December to 26°C in July and August.

Chance of a wet day

Wettest in May (60% of days), driest in August (36%).

Cloud cover

Clearest in July (30% cover), cloudiest in January and February (65%).

Daylight

From 8h 48m in December to 15h 35m in June.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the best months. Hover or tap a week for its figures.

Month by month

°F°C
Big Sky, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryCool season
9°-13°30°-1°
3 days65%9h 10m
FebruaryCool season
11°-12°32°0°
3 days65%10h 19m
MarchCool season
15°-9°38°3°
3 days65%11h 50m
April
21°-6°45°7°
4 days64%13h 28m
May
29°-2°53°12°
4 days60%14h 52m
JuneWarm season
38°3°67°19°
4 days50%15h 35m
JulyWarm seasonAt its best
48°9°78°26°
3 days30%15h 15m
AugustWarm seasonAt its best
48°9°78°26°
3 days31%14h 01m
SeptemberWarm season
40°4°68°20°
3 days41%12h 26m
October
29°-2°55°13°
3 days48%10h 49m
NovemberCool season
16°-9°40°4°
3 days58%9h 27m
DecemberCool season
9°-13°29°-2°
3 days64%8h 48m

When is the best time to visit Big Sky?

The best months are July to August: highs near 78°F, nights near 48°F, and rain on about three days a week. Winter sports depend on snow, which these pages don't measure.The best months are July to August: highs near 26°C, nights near 9°C, and rain on about three days a week. Winter sports depend on snow, which these pages don't measure.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

Questions

What is the warmest month in Big Sky?

July and August, with highs near 78°F and lows near 48°F. The coolest is December, with highs near 29°F.July and August, with highs near 26°C and lows near 9°C. The coolest is December, with highs near -2°C.

When does it rain most in Big Sky?

May, with rain or snow on about four days a week. August is the driest, with rain on about three days a week.

How long are the days in Big Sky?

From about 9 hours in December to 15½ hours in June.

When are the skies clearest in Big Sky?

July, when cloud covers about 30% of the sky on average. January and February are the cloudiest, at about 65%.

Places with a year like Big Sky's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to Big Sky's through the year, one place a country. “Six months apart”: their winter is Big Sky's summer.

Elsewhere in United States

All of United States

Where to stay

1 in our collection
Open the planning map

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Big Sky. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (2,134 m) against the climate model's (2,477 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (2,134 m) against the climate model's (2,477 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.