Weather Forecast Accuracy Last Month (December)

Note: Weather Underground uses the same forecast as The Weather Channel and so is not shown

Weather Forecast Accuracy Last Year (2024)

Weather Changeability for O Fallon, Illinois

Average change in

Temperature

Average change in high temperature day-to-day

Last Month:

5.6°

Last Year:

6.0°

Average change in low temperature day-to-day

Last Month:

7.0°

Last Year:

7.6°

Average change in

Precipitation

Chance of dry day after a precip day

Last Month:

31%

Last Year:

59%

Chance of precip day after a dry day

Last Month:

33%

Last Year:

21%

ForecastAdvisor Fact

On average, Weatherbit's high temperature forecasts for O Fallon were off by 2.84 degrees last month.

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