Grinnell Weather in March
Average highs run from 39°F on March 1 to 53°F on March 31, and lows from 19°F to 30°F. Normal precipitation for the month is 2.22 in over about 9 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
- 25°F
- Precipitation
- 2.22 in
- Snowfall
- 3.4 in
- Record high
- 90°FMar 22, 2026
- Record low
- -17°FMar 1, 1962
- Chance of a freeze
- 100%
- Daylight
- 11 h 15 min to 12 h 40 min
- Cloud cover
- 65%
- Humidity
- 77%
- Dew point
- 30°F
- Wind
- 12.3 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 | 39°F | 19°F | 70°F 1923 | -17°F 1962 | 28% | 13% |
| Mar 2 | 39°F | 19°F | 74°F 1923 | -14°F 1913 | 28% | 13% |
| Mar 3 | 40°F | 20°F | 72°F 1983 | -14°F 2014 | 28% | 12% |
| Mar 4 | 40°F | 20°F | 78°F 2024 | -14°F 2014 | 28% | 12% |
| Mar 5 | 41°F | 21°F | 69°F 1910 | -16°F 1960 | 28% | 12% |
| Mar 6 | 41°F | 21°F | 71°F 2009 | -9°F 1982 | 28% | 11% |
| Mar 7 | 42°F | 21°F | 73°F 2000 | -7°F 1996 | 28% | 11% |
| Mar 8 | 42°F | 22°F | 76°F 2000 | -7°F 1996 | 28% | 11% |
| Mar 9 | 43°F | 22°F | 75°F 1977 | -5°F 1932 | 28% | 10% |
| Mar 10 | 43°F | 23°F | 75°F 2026 | -3°F 1978 | 28% | 10% |
| Mar 11 | 44°F | 23°F | 77°F 2025 | -1°F 1969 | 28% | 10% |
| Mar 12 | 44°F | 23°F | 78°F 1972 | -11°F 1998 | 28% | 9% |
| Mar 13 | 45°F | 24°F | 76°F 1990 | -10°F 1998 | 28% | 9% |
| Mar 14 | 45°F | 24°F | 75°F 2007 | -5°F 1975 | 28% | 9% |
| Mar 15 | 46°F | 25°F | 81°F 2025 | 0°F 1906 | 29% | 8% |
| Mar 16 | 46°F | 25°F | 76°F 2012 | -4°F 1900 | 29% | 8% |
| Mar 17 | 47°F | 25°F | 82°F 2015 | -2°F 1906 | 29% | 8% |
| Mar 18 | 47°F | 26°F | 81°F 1918 | -3°F 2026 | 29% | 8% |
| Mar 19 | 48°F | 26°F | 79°F 2012 | -13°F 1923 | 29% | 7% |
| Mar 20 | 48°F | 26°F | 79°F 2012 | 2°F 1906 | 30% | 7% |
| Mar 21 | 49°F | 27°F | 85°F 1907 | -3°F 1951 | 30% | 7% |
| Mar 22 | 49°F | 27°F | 90°F 2026 | -1°F 1912 | 30% | 6% |
| Mar 23 | 50°F | 27°F | 90°F 1910 | 7°F 1974 | 31% | 6% |
| Mar 24 | 50°F | 28°F | 80°F 1910 | -2°F 1974 | 31% | 6% |
| Mar 25 | 51°F | 28°F | 81°F 1967 | -3°F 1974 | 31% | 6% |
| Mar 26 | 51°F | 28°F | 87°F 1907 | 0°F 1955 | 31% | 6% |
| Mar 27 | 52°F | 29°F | 87°F 1907 | 5°F 1965 | 32% | 5% |
| Mar 28 | 52°F | 29°F | 82°F 1910 | 6°F 1970 | 32% | 5% |
| Mar 29 | 53°F | 29°F | 85°F 1895 | 6°F 1969 | 32% | 5% |
| Mar 30 | 53°F | 30°F | 88°F 1986 | 7°F 1969 | 33% | 5% |
| Mar 31 | 53°F | 30°F | 87°F 2026 | 9°F 1923 | 33% | 4% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- March 1
- sunrise 6:46 AM, sunset 6:01 PM
- March 31
- sunrise 6:55 AM, sunset 7:35 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00133473 (Grinnell 3 Sw), public domain. Records: NOAA GHCN-Daily, station USC00133473, 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.