Helena Weather in March
Average highs run from 55°F on March 1 to 66°F on March 31, and lows from 31°F to 40°F. Normal precipitation for the month is 2.22 in over about 6 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
- 61°F
- Average low
- 36°F
- Precipitation
- 2.22 in
- Snowfall
- 3.2 in
- Record high
- 100°FMar 19, 1907
- Record low
- 0°FMar 3, 1960
- Chance of a freeze
- 100%
- Daylight
- 11 h 25 min to 12 h 35 min
- Cloud cover
- 58%
- Humidity
- 63%
- Dew point
- 35°F
- Wind
- 12.1 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 | 55°F | 31°F | 83°F 2006 | 8°F 1962 | 17% | 4% |
| Mar 2 | 56°F | 31°F | 86°F 1904 | 5°F 1922 | 17% | 4% |
| Mar 3 | 56°F | 31°F | 88°F 1955 | 0°F 1960 | 18% | 4% |
| Mar 4 | 56°F | 32°F | 84°F 1910 | 2°F 2014 | 18% | 4% |
| Mar 5 | 57°F | 32°F | 91°F 1910 | 5°F 1960 | 18% | 4% |
| Mar 6 | 57°F | 32°F | 90°F 2009 | 6°F 1943 | 18% | 4% |
| Mar 7 | 58°F | 33°F | 87°F 1904 | 7°F 1996 | 18% | 4% |
| Mar 8 | 58°F | 33°F | 83°F 1939 | 5°F 1967 | 18% | 3% |
| Mar 9 | 58°F | 33°F | 83°F 1986 | 11°F 1932 | 19% | 3% |
| Mar 10 | 59°F | 34°F | 90°F 1955 | 10°F 1932 | 19% | 3% |
| Mar 11 | 59°F | 34°F | 91°F 1967 | 12°F 1998 | 19% | 3% |
| Mar 12 | 60°F | 34°F | 90°F 1967 | 2°F 1948 | 19% | 3% |
| Mar 13 | 60°F | 35°F | 90°F 1916 | 13°F 1950 | 19% | 3% |
| Mar 14 | 60°F | 35°F | 86°F 1908 | 14°F 1954 | 19% | 3% |
| Mar 15 | 61°F | 35°F | 87°F 1935 | 18°F 1906 | 20% | 3% |
| Mar 16 | 61°F | 36°F | 85°F 1934 | 18°F 2026 | 20% | 3% |
| Mar 17 | 62°F | 36°F | 91°F 1916 | 18°F 1906 | 20% | 3% |
| Mar 18 | 62°F | 36°F | 94°F 1916 | 18°F 1934 | 20% | 3% |
| Mar 19 | 62°F | 37°F | 100°F 1907 | 14°F 2023 | 20% | 3% |
| Mar 20 | 63°F | 37°F | 92°F 1934 | 14°F 1913 | 21% | 3% |
| Mar 21 | 63°F | 37°F | 95°F 2026 | 16°F 1974 | 21% | 2% |
| Mar 22 | 64°F | 38°F | 96°F 2026 | 12°F 1955 | 21% | 2% |
| Mar 23 | 64°F | 38°F | 87°F 1910 | 19°F 1968 | 21% | 2% |
| Mar 24 | 64°F | 38°F | 93°F 1929 | 18°F 1965 | 21% | 2% |
| Mar 25 | 65°F | 38°F | 92°F 1910 | 17°F 1894 | 21% | 2% |
| Mar 26 | 65°F | 39°F | 92°F 2026 | 10°F 1955 | 21% | 2% |
| Mar 27 | 65°F | 39°F | 94°F 2026 | 15°F 1955 | 21% | 2% |
| Mar 28 | 66°F | 39°F | 86°F 1963 | 14°F 1931 | 22% | 2% |
| Mar 29 | 66°F | 39°F | 91°F 1963 | 16°F 1944 | 22% | 1% |
| Mar 30 | 66°F | 40°F | 87°F 1904 | 20°F 1987 | 22% | 1% |
| Mar 31 | 66°F | 40°F | 98°F 1940 | 18°F 1926 | 22% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- March 1
- sunrise 7:03 AM, sunset 6:28 PM
- March 31
- sunrise 7:20 AM, sunset 7:55 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00344019 (Helena 1 Sse), public domain. Records: NOAA GHCN-Daily, station USC00342912, 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.