Climate almanac
O'Fallon
Missouri, United States · 38.81°, -90.70°
What is the weather like in O'Fallon in February?
In February, O'Fallon is typically 48°F (9°C) during the day and 29°F (-2°C) at night. The month brings about 2.6 in (67 mm) of precipitation in total. Snowfall averages about 4.1 in (104 mm) over the month.
- Average high48°F (9°C)
- Average low29°F (-2°C)
- Precipitation2.6 in (67 mm)
- Clear or mostly clear days8
- Snowfall4.1 in (104 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)