Big Sky Weather in March
Average highs run from 38°F on March 1 to 45°F on March 31, and lows from 12°F to 20°F. Normal precipitation for the month is 1.88 in over about 12 wet days.
March day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
March at a glance
- Average high
- 42°F
- Average low
- 17°F
- Precipitation
- 1.88 in
- Snowfall
- 6.6 in
- Record high
- 79°FMar 20, 2026
- Record low
- -34°FMar 4, 2019
- Chance of a freeze
- 100%
- Daylight
- 11 h 10 min to 12 h 45 min
- Cloud cover
- 72%
- Humidity
- 82%
- Dew point
- 21°F
- Wind
- 7.4 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Mar 1 | 38°F | 12°F | 66°F 1986 | -11°F 1960 | 38% | 15% |
| Mar 2 | 38°F | 12°F | 62°F 1986 | -14°F 1960 | 38% | 15% |
| Mar 3 | 39°F | 12°F | 61°F 2025 | -18°F 1976 | 38% | 15% |
| Mar 4 | 39°F | 13°F | 65°F 2022 | -34°F 2019 | 38% | 15% |
| Mar 5 | 39°F | 13°F | 64°F 1987 | -29°F 2019 | 38% | 15% |
| Mar 6 | 40°F | 13°F | 62°F 2016 | -29°F 1920 | 38% | 15% |
| Mar 7 | 40°F | 14°F | 61°F 2020 | -10°F 1951 | 38% | 15% |
| Mar 8 | 40°F | 14°F | 60°F 2005 | -18°F 1951 | 38% | 14% |
| Mar 9 | 41°F | 15°F | 67°F 1972 | -22°F 1932 | 37% | 14% |
| Mar 10 | 41°F | 15°F | 69°F 1972 | -22°F 1932 | 37% | 14% |
| Mar 11 | 41°F | 15°F | 66°F 2005 | -22°F 1932 | 37% | 14% |
| Mar 12 | 41°F | 16°F | 69°F 1934 | -16°F 1932 | 37% | 14% |
| Mar 13 | 42°F | 16°F | 66°F 1992 | -7°F 1944 | 37% | 14% |
| Mar 14 | 42°F | 16°F | 76°F 1934 | -9°F 1944 | 37% | 14% |
| Mar 15 | 42°F | 17°F | 68°F 1934 | -8°F 1944 | 37% | 14% |
| Mar 16 | 42°F | 17°F | 69°F 1972 | -8°F 2020 | 37% | 13% |
| Mar 17 | 43°F | 17°F | 65°F 1972 | -5°F 1965 | 37% | 13% |
| Mar 18 | 43°F | 18°F | 71°F 2007 | -21°F 1943 | 37% | 13% |
| Mar 19 | 43°F | 18°F | 78°F 2026 | 3°F 1965 | 37% | 13% |
| Mar 20 | 43°F | 18°F | 79°F 2026 | -6°F 1955 | 37% | 13% |
| Mar 21 | 43°F | 18°F | 78°F 2026 | 1°F 2002 | 37% | 13% |
| Mar 22 | 44°F | 19°F | 73°F 2026 | 0°F 1933 | 37% | 13% |
| Mar 23 | 44°F | 19°F | 71°F 2004 | -12°F 1964 | 37% | 13% |
| Mar 24 | 44°F | 19°F | 67°F 1939 | -12°F 1965 | 37% | 12% |
| Mar 25 | 44°F | 19°F | 70°F 2007 | -18°F 1955 | 37% | 12% |
| Mar 26 | 44°F | 20°F | 70°F 2012 | -10°F 1955 | 38% | 12% |
| Mar 27 | 44°F | 20°F | 73°F 2025 | -7°F 1931 | 38% | 12% |
| Mar 28 | 45°F | 20°F | 73°F 1986 | 2°F 1965 | 38% | 12% |
| Mar 29 | 45°F | 20°F | 72°F 1986 | -5°F 1987 | 38% | 12% |
| Mar 30 | 45°F | 20°F | 73°F 1966 | -6°F 1936 | 38% | 12% |
| Mar 31 | 45°F | 20°F | 72°F 2015 | 0°F 1936 | 38% | 12% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- March 1
- sunrise 7:03 AM, sunset 6:13 PM
- March 31
- sunrise 7:07 AM, sunset 7:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00240775 (Big Sky 2WNW), public domain. Records: NOAA GHCN-Daily, station USC00242793, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.