Weather Forecast Accuracy Last Month (December)

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Weather Forecast Accuracy Last Year (2025)

Weather Changeability for Casper, Wyoming

Average change in

Temperature

Average change in high temperature day-to-day

Last Month:

8.6°

Last Year:

7.5°

Average change in low temperature day-to-day

Last Month:

12.4°

Last Year:

7.7°

Average change in

Precipitation

Chance of dry day after a precip day

Last Month:

67%

Last Year:

65%

Chance of precip day after a dry day

Last Month:

17%

Last Year:

19%

ForecastAdvisor Fact

20.3% of OpenWeather's low temperature forecasts for Casper were within 3 degrees of actual temperatures last year.

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