Helena Weather in March
Average highs run from 64°F on March 1 to 72°F on March 31, and lows from 41°F to 48°F. Normal precipitation for the month is 5.34 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
- 68°F
- Average low
- 45°F
- Precipitation
- 5.34 in
- Snowfall
- 0.7 in
- Record high
- 89°FMar 25, 2007
- Record low
- 20°FMar 6, 2015
- Chance of a freeze
- 82%
- Daylight
- 11 h 29 min to 12 h 31 min
- Cloud cover
- 61%
- Humidity
- 81%
- Dew point
- 47°F
- Wind
- 5.1 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 | 64°F | 41°F | 80°F 2017 | 29°F 2005 | 39% | 0% |
| Mar 2 | 64°F | 42°F | 81°F 2012 | 24°F 2005 | 39% | 0% |
| Mar 3 | 64°F | 42°F | 76°F 2004 | 25°F 2009 | 39% | 0% |
| Mar 4 | 65°F | 42°F | 79°F 2015 | 24°F 2010 | 39% | 0% |
| Mar 5 | 65°F | 43°F | 77°F 2004 | 24°F 2010 | 38% | 0% |
| Mar 6 | 65°F | 43°F | 77°F 2009 | 20°F 2015 | 38% | 0% |
| Mar 7 | 65°F | 43°F | 77°F 2009 | 23°F 2015 | 38% | 0% |
| Mar 8 | 66°F | 43°F | 80°F 2012 | 28°F 2015 | 38% | 0% |
| Mar 9 | 66°F | 44°F | 80°F 2016 | 26°F 2008 | 38% | 0% |
| Mar 10 | 66°F | 44°F | 80°F 2006 | 31°F 2008 | 38% | 0% |
| Mar 11 | 67°F | 44°F | 83°F 2006 | 29°F 2004 | 38% | 0% |
| Mar 12 | 67°F | 44°F | 84°F 2006 | 31°F 2008 | 38% | 0% |
| Mar 13 | 67°F | 45°F | 82°F 2006 | 29°F 2014 | 38% | 0% |
| Mar 14 | 67°F | 45°F | 81°F 2021 | 31°F 2014 | 37% | 0% |
| Mar 15 | 68°F | 45°F | 88°F 2016 | 28°F 2018 | 37% | 0% |
| Mar 16 | 68°F | 45°F | 85°F 2012 | 25°F 2017 | 37% | 0% |
| Mar 17 | 68°F | 45°F | 86°F 2012 | 35°F 2019 | 37% | 0% |
| Mar 18 | 69°F | 46°F | 85°F 2012 | 34°F 2005 | 37% | 0% |
| Mar 19 | 69°F | 46°F | 87°F 2012 | 32°F 2019 | 37% | 0% |
| Mar 20 | 69°F | 46°F | 87°F 2012 | 32°F 2019 | 37% | 0% |
| Mar 21 | 70°F | 46°F | 87°F 2017 | 32°F 2016 | 37% | 0% |
| Mar 22 | 70°F | 46°F | 82°F 2011 | 32°F 2016 | 36% | 0% |
| Mar 23 | 70°F | 47°F | 83°F 2007 | 31°F 2004 | 36% | 0% |
| Mar 24 | 70°F | 47°F | 86°F 2007 | 33°F 2006 | 36% | 0% |
| Mar 25 | 71°F | 47°F | 89°F 2007 | 27°F 2008 | 36% | 0% |
| Mar 26 | 71°F | 47°F | 87°F 2020 | 27°F 2006 | 36% | 0% |
| Mar 27 | 71°F | 47°F | 86°F 2012 | 26°F 2013 | 36% | 0% |
| Mar 28 | 72°F | 48°F | 86°F 2020 | 31°F 2013 | 36% | 0% |
| Mar 29 | 72°F | 48°F | 88°F 2007 | 36°F 2013 | 36% | 0% |
| Mar 30 | 72°F | 48°F | 81°F 2005 | 35°F 2009 | 36% | 0% |
| Mar 31 | 72°F | 48°F | 82°F 2012 | 34°F 2014 | 36% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- March 1
- sunrise 6:15 AM, sunset 5:44 PM
- March 31
- sunrise 6:36 AM, sunset 7:07 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00013781 (Helena), public domain. Records: NOAA GHCN-Daily, station USC00013781, 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.