World Resorts USA Big Sky Weather

Big Sky weather in May

Weather in Big Sky: May

Average day temperature: 52.4°F
Average night temperature: 37.9°F
Number of sunny days: 9 days
Day length: 14.3 - 15.4 hours
Number of days with precipitation: 4 days
Precipitation totals: 2.0 in.

Air temperature in May, °F

Show year:
2026
2025
2024

The highest day temperature during May of 2026 was 68°F. At the same time the lowest night temperature was 19°F. Daily and nightly averages during May were 50.5°F and 36.4°F.

Sunny, partly cloudy and cloudy days

Mostly all days in May are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in May, in.

Precipitation total value in Big Sky in May is 2.0 in. Other months of the year show relatively similar values.

Wind speed in May, mph

The average wind speed value in May is 5.1 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 7.3.

Best time for vacation in Big Sky

Sunniest months:
August 22 days
July 21 days
September 19 days
Warmest months:
July 76.7 °F
August 75.0 °F
September 67.1 °F
Coldest months:
January 25.0 °F
February 25.1 °F
December 27.8 °F
Rainiest months:
June 3 days
May 3 days
October 2 days
Windiest months:
June 5.4 mph
April 5.3 mph
September 5.2 mph

Big Sky on a weather map

Big Sky
+61°F
SW 2 mph
Feels like: +61°F
Precip.: 4%
Places in USA:
Name
°F
+88°F
+91°F
+77°F
+95°F
+77°F
+90°F
+72°F
+88°F
+82°F
+73°F
+64°F
+77°F
+93°F
+95°F
+84°F
24 Hours Forecast
Big Sky
Local time: 09:44
July 21, tuesday
1200
77°F
S
2 mph
1500
75°F
S
6 mph
1800
75°F
S
8 mph
2100
63°F
S
4 mph
July 22, wednesday
0000
61°F
SW
2 mph
0300
59°F
W
2 mph
0600
55°F
NW
2 mph
0900
66°F
W
1 mph
Units of measurement: °C / °F