Average change in
Temperature
Average change in high temperature day-to-day
Last Month:
6.1°
Last Year:
6.1°
Average change in low temperature day-to-day
Last Month:
8.6°
Last Year:
8.1°
Average change in
Precipitation
Chance of dry day after a precip day
Last Month:
33%
Last Year:
56%
Chance of precip day after a dry day
Last Month:
30%
Last Year:
19%
ForecastAdvisor Fact
3.2% of AerisWeather's low temperature forecasts for O Fallon were off by more than 10 degrees last year.