March weather in Keystone, IA
The average temperature in Keystone in March is 35.9°F (25.8°F–46.0°F). Average precipitation: 2.03 inches. Average snowfall is 3.4 inches.
March is a spring month in Keystone, and is cooler than the annual average of 48.2°F. Daily temperatures swing about 20.2°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 11h 43m. For travel, March is cool.
Avg High
46.0°F
Avg Low
25.8°F
Precipitation
2.03 in
Snow
3.4 in
March records in Keystone
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| March 1 | 72.0°F (1992) | -23.1°F (1962) | 0.73 in (1991) |
| March 2 | 73.9°F (1923) | -13.0°F (1913) | 1.58 in (1970) |
| March 3 | 73.0°F (1983) | -16.1°F (2014) | 0.95 in (1985) |
| March 4 | 79.0°F (2024) | -11.9°F (2014) | 1.76 in (1976) |
| March 5 | 72.0°F (1921) | -15.0°F (1960) | 1.30 in (2025) |
| March 6 | 72.0°F (2009) | -13.0°F (1960) | 1.25 in (1961) |
| March 7 | 73.9°F (1987) | -7.1°F (1899) | 0.38 in (2022) |
| March 8 | 80.1°F (2000) | -6.0°F (1943) | 1.45 in (1961) |
| March 9 | 75.0°F (2000) | -5.1°F (1912) | 2.00 in (1901) |
| March 10 | 73.0°F (1894) | -4.0°F (1912) | 1.25 in (2013) |
| March 11 | 77.0°F (1905) | -15.0°F (1948) | 1.12 in (1977) |
| March 12 | 77.0°F (1990) | -15.0°F (1948) | 1.41 in (1991) |
| March 13 | 70.0°F (1922) | -8.0°F (1998) | 1.32 in (1917) |
| March 14 | 75.0°F (2007) | -6.0°F (1897) | 1.10 in (1913) |
| March 15 | 82.0°F (2025) | -0.9°F (2017) | 1.58 in (1943) |
| March 16 | 80.1°F (2012) | -4.0°F (1900) | 1.09 in (1919) |
| March 17 | 82.9°F (2012) | -2.0°F (1902) | 0.82 in (1965) |
| March 18 | 84.0°F (2012) | -0.9°F (1923) | 1.05 in (1957) |
| March 19 | 82.9°F (2012) | -15.0°F (1923) | 2.18 in (1922) |
| March 20 | 82.9°F (2012) | 0.0°F (1906) | 1.00 in (1912) |
| March 21 | 86.0°F (1938) | 0.0°F (1951) | 0.55 in (1952) |
| March 22 | 89.1°F (2026) | -2.9°F (1912) | 0.64 in (1993) |
| March 23 | 86.0°F (1910) | 3.0°F (1923) | 1.28 in (1953) |
| March 24 | 82.9°F (1939) | -2.0°F (1974) | 1.70 in (1904) |
| March 25 | 82.0°F (1907) | 3.0°F (1894) | 1.61 in (1920) |
| March 26 | 84.9°F (1907) | 5.0°F (1955) | 1.47 in (1916) |
| March 27 | 82.9°F (1920) | 7.0°F (1964) | 1.81 in (1991) |
| March 28 | 81.0°F (1968) | 7.0°F (1924) | 2.01 in (1900) |
| March 29 | 88.0°F (1986) | 5.0°F (1894) | 1.26 in (1979) |
| March 30 | 81.0°F (1967) | 6.1°F (1969) | 1.58 in (1933) |
| March 31 | 86.0°F (2026) | 7.0°F (1923) | 2.15 in (1998) |