O'fallon, MO
Missouri · Honest neighborhood reviews
Photo: Unsplash
Median Income
$92K
Median Home Price
$263K
Neighborhoods
1
Climate
Weather in O'fallon
🍂
Humid Continental
Cold, snowy winters and warm summers. Four distinct seasons with year-round precipitation.
Avg High
67°F
Avg Low
48°F
Annual Rain
46.8"
Hottest / Coldest
Jul / Feb
Monthly temperatures & rain
42°
26°J
44°
24°F
57°
38°M
66°
45°A
76°
57°M
86°
66°J
89°
70°J
87°
70°A
81°
62°S
69°
51°O
56°
38°N
50°
33°D
Temp range (high / low)
Precipitation (relative)
Wettest: AugBased on 2021–2023 climate data · Open-Meteo ERA5 archive · Temperatures in °F