February weather in O'Fallon, IL
The average temperature in O'Fallon in February is 38.3°F (28.0°F–48.6°F). Average precipitation: 2.16 inches. Average snowfall is 3.3 inches.
February is a winter month in O'Fallon, and is cooler than the annual average of 57.7°F. Daily temperatures swing about 20.6°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 10h 33m. For travel, February is cool.
Avg High
48.6°F
Avg Low
28.0°F
Precipitation
2.16 in
Snow
3.3 in
February records in O'Fallon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| February 1 | 69.1°F (1989) | -16.1°F (1965) | 1.58 in (1966) |
| February 2 | 73.0°F (2020) | -11.0°F (1951) | 4.48 in (1986) |
| February 3 | 72.0°F (2016) | -11.9°F (1985) | 2.25 in (1986) |
| February 4 | 73.0°F (2008) | -4.0°F (1985) | 0.94 in (2012) |
| February 5 | 72.0°F (2008) | -9.9°F (1979) | 0.85 in (2008) |
| February 6 | 61.0°F (2023) | -8.0°F (1979) | 1.65 in (1951) |
| February 7 | 71.1°F (2017) | -9.0°F (2014) | 2.90 in (1999) |
| February 8 | 70.0°F (2015) | -8.0°F (1985) | 0.71 in (1969) |
| February 9 | 69.1°F (2009) | -11.0°F (1979) | 1.13 in (1959) |
| February 10 | 77.0°F (1976) | -20.9°F (1982) | 1.92 in (1966) |
| February 11 | 75.0°F (1976) | -9.0°F (1981) | 1.57 in (2009) |
| February 12 | 66.9°F (1990) | -9.9°F (1981) | 1.51 in (1950) |
| February 13 | 81.0°F (1962) | 0.0°F (1982) | 0.79 in (1978) |
| February 14 | 70.0°F (1954) | 0.0°F (2021) | 2.07 in (1949) |
| February 15 | 82.9°F (2018) | 0.0°F (2021) | 1.27 in (1990) |
| February 16 | 77.0°F (2018) | -5.1°F (2021) | 0.53 in (1998) |
| February 17 | 73.9°F (2017) | -2.9°F (2021) | 1.96 in (2022) |
| February 18 | 74.8°F (2026) | -9.0°F (1993) | 0.94 in (2000) |
| February 19 | 75.9°F (2016) | -2.9°F (2021) | 1.08 in (1974) |
| February 20 | 77.0°F (2016) | 1.9°F (2021) | 1.54 in (1951) |
| February 21 | 73.0°F (2017) | 1.0°F (1963) | 2.16 in (2018) |
| February 22 | 75.9°F (2017) | -2.0°F (1963) | 1.02 in (1971) |
| February 23 | 78.1°F (1996) | 6.1°F (1989) | 2.36 in (1985) |
| February 24 | 81.0°F (2000) | 5.0°F (1989) | 2.10 in (2018) |
| February 25 | 79.0°F (2000) | 3.9°F (1967) | 1.45 in (1957) |
| February 26 | 77.0°F (1996) | 5.0°F (1963) | 2.22 in (1957) |
| February 27 | 75.9°F (1981) | -2.0°F (1993) | 1.02 in (1997) |
| February 28 | 82.9°F (2024) | -4.0°F (1993) | 0.64 in (1951) |
| February 29 | 80.1°F (1972) | 7.0°F (1960) | 0.22 in (2012) |