Measurements:
°C
°F
Big Sky
66°F
E 9 mph
Feels like: 66°F
Precip: 1%
World Resorts USA Big Sky Weather May Weather in Big Sky

Big Sky Weather: May

Average Day Temperature: 52.6°F
Average Night Temperature: 36.5°F
Number of Sunny Days: 9 days
Sunshine Hours: 14.3 - 15.4 hours
Number of Rainy Days: 3 days
Precipitation Totals: 2.0 in
Number of Snowy Days: 1 day

Air Temperature in May, °F

Select Year: 2026 2025 2024

The highest day temperature in May 2026 was 71°F. The lowest night temperature was 16°F. The average values for day and night temperatures during May were 50.6°F и 34.9°F respectivly.

Sunny, Cloudy and Gloomy days

Most of the days in May are gloomy but you can also expect sunny days.

Precipitation Totals in May, in

Precipitation total in May for Big Sky is 2.0 in. It makes may the most rainy month of the year.

Wind Speed in May, mph

The average wind speed in May is 5.1 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Big Sky in May is 7.2 hours.

Best Time to Visit Big Sky
The most sunny months:
July 21 days
August 20 days
September 19 days
The most warm months:
July 79.4 °F
August 77.0 °F
September 67.7 °F
The most cold months:
January 22.3 °F
February 22.3 °F
December 25.4 °F
The most rainy months:
June 3 days
May 3 days
October 2 days
The most windy months:
June 5 mph
September 5 mph
April 5 mph

Big Sky on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +62
Hawaii +82
Houston +86
Las Vegas +92
Los Angeles +100
Maui +74
Miami +88
Myrtle Beach +70
New York +62
San Diego +84
San Francisco +66
Santa Monica +94
Sarasota +84
Washington +64
24 Hours Weather Forecast
Big Sky
Local time: 18:21
05 oct, monday
2100 52°F
NE
2 mph
06 oct, tuesday
0000 50°F
NE
4 mph
0300 48°F
NE
4 mph
0600 48°F
NE
4 mph
0900 54°F
NE
3 mph
1200 66°F
E
7 mph
1500 68°F
E
9 mph
1800 62°F
SE
4 mph