Weather Forecast Accuracy Last Month (September)

Weather Forecast Accuracy Last Year (2020)

Weather Changeability for Chicago, Illinois

Average change in

Temperature

Average change in high temperature day-to-day

Last Month:

6.4°

Last Year:

6.1°

Average change in low temperature day-to-day

Last Month:

5.5°

Last Year:

6.2°

Average change in

Precipitation

Chance of dry day after a precip day

Last Month:

56%

Last Year:

62%

Chance of precip day after a dry day

Last Month:

14%

Last Year:

26%

ForecastAdvisor Fact

75.3% of NWS Digital Forecast's high temperature forecasts for Chicago were within 3 degrees of actual temperatures last year.

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