Spearfish Weather in March
Average highs run from 40°F on March 1 to 51°F on March 31, and lows from 19°F to 29°F. Normal precipitation for the month is 1.19 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
- 46°F
- Average low
- 24°F
- Precipitation
- 1.19 in
- Snowfall
- 12.0 in
- Record high
- 82°FMar 22, 1910
- Record low
- -27°FMar 4, 2019
- Chance of a freeze
- 100%
- Daylight
- 11 h 11 min to 12 h 44 min
- Cloud cover
- 67%
- Humidity
- 64%
- Dew point
- 22°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 | 40°F | 19°F | 68°F 1941 | -13°F 1962 | 21% | 13% |
| Mar 2 | 41°F | 20°F | 68°F 1905 | -15°F 2014 | 21% | 13% |
| Mar 3 | 41°F | 20°F | 75°F 1921 | -17°F 1960 | 21% | 13% |
| Mar 4 | 41°F | 20°F | 75°F 1921 | -27°F 2019 | 21% | 13% |
| Mar 5 | 42°F | 21°F | 72°F 1986 | -19°F 1945 | 21% | 13% |
| Mar 6 | 42°F | 21°F | 69°F 1968 | -15°F 1920 | 21% | 12% |
| Mar 7 | 42°F | 21°F | 73°F 1911 | -15°F 1932 | 21% | 12% |
| Mar 8 | 43°F | 22°F | 67°F 2021 | -12°F 1951 | 21% | 12% |
| Mar 9 | 43°F | 22°F | 69°F 2026 | -6°F 1932 | 21% | 12% |
| Mar 10 | 44°F | 22°F | 71°F 1900 | -18°F 1948 | 21% | 12% |
| Mar 11 | 44°F | 23°F | 80°F 1972 | -18°F 1948 | 21% | 11% |
| Mar 12 | 44°F | 23°F | 78°F 2007 | -18°F 1897 | 21% | 11% |
| Mar 13 | 45°F | 23°F | 78°F 2007 | -15°F 1950 | 21% | 11% |
| Mar 14 | 45°F | 24°F | 75°F 2003 | -12°F 1925 | 22% | 11% |
| Mar 15 | 46°F | 24°F | 77°F 2015 | -7°F 1893 | 22% | 11% |
| Mar 16 | 46°F | 24°F | 76°F 2015 | -5°F 1943 | 22% | 11% |
| Mar 17 | 46°F | 25°F | 78°F 2012 | -7°F 1902 | 22% | 11% |
| Mar 18 | 47°F | 25°F | 76°F 2012 | -11°F 1923 | 23% | 11% |
| Mar 19 | 47°F | 25°F | 78°F 2012 | -9°F 1906 | 23% | 10% |
| Mar 20 | 48°F | 26°F | 78°F 1910 | -12°F 1906 | 23% | 10% |
| Mar 21 | 48°F | 26°F | 79°F 2026 | -18°F 1913 | 23% | 10% |
| Mar 22 | 48°F | 26°F | 82°F 1910 | -8°F 1898 | 24% | 10% |
| Mar 23 | 49°F | 27°F | 79°F 1910 | -10°F 1913 | 24% | 10% |
| Mar 24 | 49°F | 27°F | 75°F 1907 | -6°F 1965 | 24% | 10% |
| Mar 25 | 49°F | 27°F | 76°F 2007 | -11°F 1955 | 25% | 10% |
| Mar 26 | 50°F | 27°F | 77°F 1993 | -13°F 1913 | 25% | 10% |
| Mar 27 | 50°F | 28°F | 77°F 1895 | -6°F 1931 | 25% | 10% |
| Mar 28 | 50°F | 28°F | 77°F 2025 | -7°F 1931 | 26% | 10% |
| Mar 29 | 50°F | 28°F | 80°F 1893 | -10°F 1937 | 26% | 10% |
| Mar 30 | 51°F | 28°F | 80°F 1893 | -8°F 1936 | 26% | 10% |
| Mar 31 | 51°F | 29°F | 80°F 1978 | 4°F 1899 | 27% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- March 1
- sunrise 6:33 AM, sunset 5:44 PM
- March 31
- sunrise 6:38 AM, sunset 7:22 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00397882 (Spearfish), public domain. Records: NOAA GHCN-Daily, station USC00397882, 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.