Average change in
Temperature
Average change in high temperature day-to-day
Last Month:
5.1°
Last Year:
6.1°
Average change in low temperature day-to-day
Last Month:
7.2°
Last Year:
7.7°
Average change in
Precipitation
Chance of dry day after a precip day
Last Month:
50%
Last Year:
60%
Chance of precip day after a dry day
Last Month:
33%
Last Year:
22%
ForecastAdvisor Fact
It rained or snowed 58% of the time in O Fallon last month when NWS Digital Forecast's text forecasts called for precipitation, and 16% of the time when they did not.