Boulder Weather in March
Average highs run from 52°F on March 1 to 61°F on March 31, and lows from 25°F to 32°F. Normal precipitation for the month is 1.99 in over about 8 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
- 57°F
- Average low
- 29°F
- Precipitation
- 1.99 in
- Snowfall
- 15.7 in
- Record high
- 89°FMar 21, 2026
- Record low
- -13°FMar 9, 1932
- Chance of a freeze
- 100%
- Daylight
- 11 h 19 min to 12 h 39 min
- Cloud cover
- 68%
- Humidity
- 70%
- Dew point
- 17°F
- Wind
- 9.2 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 | 52°F | 25°F | 73°F 2008 | -11°F 1922 | 24% | 21% |
| Mar 2 | 52°F | 25°F | 75°F 1901 | -8°F 1943 | 24% | 21% |
| Mar 3 | 53°F | 26°F | 73°F 1921 | -4°F 1943 | 24% | 21% |
| Mar 4 | 53°F | 26°F | 74°F 2009 | -5°F 2019 | 24% | 20% |
| Mar 5 | 53°F | 26°F | 73°F 1925 | -2°F 1948 | 24% | 20% |
| Mar 6 | 54°F | 26°F | 73°F 1972 | -8°F 1943 | 24% | 20% |
| Mar 7 | 54°F | 27°F | 70°F 1901 | -8°F 1943 | 25% | 20% |
| Mar 8 | 55°F | 27°F | 74°F 1986 | -1°F 1932 | 25% | 20% |
| Mar 9 | 55°F | 27°F | 77°F 1989 | -13°F 1932 | 25% | 20% |
| Mar 10 | 55°F | 28°F | 79°F 1900 | -7°F 1932 | 25% | 20% |
| Mar 11 | 56°F | 28°F | 78°F 1900 | -9°F 1932 | 25% | 20% |
| Mar 12 | 56°F | 28°F | 74°F 1900 | -10°F 1932 | 25% | 20% |
| Mar 13 | 56°F | 29°F | 75°F 1910 | 0°F 1895 | 25% | 19% |
| Mar 14 | 57°F | 29°F | 76°F 1935 | -2°F 1895 | 26% | 19% |
| Mar 15 | 57°F | 29°F | 78°F 2015 | 2°F 1906 | 26% | 19% |
| Mar 16 | 57°F | 29°F | 80°F 2015 | -4°F 1906 | 26% | 19% |
| Mar 17 | 58°F | 30°F | 75°F 1908 | 0°F 1924 | 26% | 19% |
| Mar 18 | 58°F | 30°F | 81°F 2026 | -5°F 1923 | 26% | 19% |
| Mar 19 | 58°F | 30°F | 85°F 2026 | -1°F 1965 | 27% | 19% |
| Mar 20 | 59°F | 30°F | 86°F 2026 | -3°F 1927 | 27% | 19% |
| Mar 21 | 59°F | 30°F | 89°F 2026 | -1°F 1914 | 27% | 19% |
| Mar 22 | 59°F | 31°F | 85°F 2026 | 0°F 1898 | 27% | 19% |
| Mar 23 | 59°F | 31°F | 76°F 1967 | 3°F 1898 | 28% | 19% |
| Mar 24 | 60°F | 31°F | 79°F 2026 | 2°F 1965 | 28% | 19% |
| Mar 25 | 60°F | 31°F | 87°F 2026 | -2°F 1996 | 28% | 19% |
| Mar 26 | 60°F | 31°F | 84°F 2026 | -1°F 1955 | 29% | 19% |
| Mar 27 | 60°F | 32°F | 78°F 1986 | -5°F 1899 | 29% | 19% |
| Mar 28 | 60°F | 32°F | 80°F 2026 | -2°F 1975 | 29% | 19% |
| Mar 29 | 61°F | 32°F | 82°F 2026 | 4°F 1975 | 30% | 19% |
| Mar 30 | 61°F | 32°F | 81°F 2026 | 6°F 1926 | 30% | 19% |
| Mar 31 | 61°F | 32°F | 81°F 2012 | 1°F 1899 | 30% | 19% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- March 1
- sunrise 6:34 AM, sunset 5:53 PM
- March 31
- sunrise 6:46 AM, sunset 7:25 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00050848 (Boulder), public domain. Records: NOAA GHCN-Daily, station USC00050848, 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.