March weather in Alton, MO
The average temperature in Alton in March is 46.0°F (33.7°F–58.3°F). Average precipitation: 4.45 inches. Average snowfall is 0.9 inches.
March is a spring month in Alton, and is cooler than the annual average of 55.7°F. Daily temperatures swing about 24.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 11h 46m. For travel, March is cool.
Avg High
58.3°F
Avg Low
33.7°F
Precipitation
4.45 in
Snow
0.9 in
March records in Alton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| March 1 | 78.1°F (1972) | 9.0°F (1980) | 1.15 in (1965) |
| March 2 | 77.0°F (1976) | 3.0°F (1980) | 0.95 in (1997) |
| March 3 | 79.0°F (1974) | 5.0°F (2014) | 2.67 in (2023) |
| March 4 | 79.0°F (1976) | 1.0°F (2014) | 1.40 in (2008) |
| March 5 | 75.9°F (2024) | 1.0°F (2014) | 1.60 in (1963) |
| March 6 | 79.0°F (1974) | 8.1°F (2014) | 1.74 in (1945) |
| March 7 | 82.9°F (2009) | 3.9°F (1967) | 1.73 in (1995) |
| March 8 | 80.1°F (2000) | 8.1°F (1996) | 1.52 in (2012) |
| March 9 | 80.1°F (1974) | 3.9°F (1996) | 2.64 in (1964) |
| March 10 | 78.1°F (1967) | 10.9°F (1996) | 3.00 in (1952) |
| March 11 | 88.0°F (1967) | 14.0°F (1998) | 2.05 in (1973) |
| March 12 | 90.0°F (1967) | 6.1°F (1998) | 2.15 in (1977) |
| March 13 | 90.0°F (1967) | 7.0°F (1998) | 1.46 in (2021) |
| March 14 | 82.0°F (1967) | 19.9°F (2005) | 1.47 in (2019) |
| March 15 | 81.0°F (2024) | 14.0°F (1975) | 2.68 in (1946) |
| March 16 | 82.0°F (1982) | 21.9°F (1967) | 0.98 in (2012) |
| March 17 | 81.0°F (1982) | 18.0°F (2026) | 1.15 in (1963) |
| March 18 | 78.1°F (1982) | 19.0°F (1967) | 2.01 in (2008) |
| March 19 | 80.1°F (1969) | 12.0°F (1965) | 6.12 in (2008) |
| March 20 | 82.9°F (1982) | 10.9°F (1965) | 1.83 in (2002) |
| March 21 | 88.0°F (2026) | 17.1°F (1965) | 2.00 in (1955) |
| March 22 | 89.1°F (2026) | 15.1°F (1974) | 1.40 in (1952) |
| March 23 | 91.9°F (2026) | 19.9°F (1974) | 1.88 in (1958) |
| March 24 | 84.0°F (1967) | 12.0°F (1974) | 1.87 in (1969) |
| March 25 | 81.0°F (2000) | 17.1°F (1966) | 2.12 in (2023) |
| March 26 | 82.9°F (2026) | 18.0°F (1964) | 1.80 in (1949) |
| March 27 | 87.1°F (2026) | 16.0°F (2001) | 1.90 in (1977) |
| March 28 | 82.9°F (2025) | 17.1°F (2001) | 4.38 in (1977) |
| March 29 | 84.0°F (1968) | 21.9°F (1982) | 1.39 in (1975) |
| March 30 | 84.0°F (1963) | 16.0°F (1964) | 1.40 in (2018) |
| March 31 | 82.9°F (1978) | 25.0°F (1975) | 2.90 in (1945) |