Weather Forecast Accuracy Last Month (December)

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Weather Forecast Accuracy Last Year (2025)

Weather Changeability for Gillette, Wyoming

Average change in

Temperature

Average change in high temperature day-to-day

Last Month:

10.2°

Last Year:

7.8°

Average change in low temperature day-to-day

Last Month:

12.3°

Last Year:

8.1°

Average change in

Precipitation

Chance of dry day after a precip day

Last Month:

71%

Last Year:

59%

Chance of precip day after a dry day

Last Month:

28%

Last Year:

21%

ForecastAdvisor Fact

4.1% of World Weather Online's high temperature forecasts for Gillette were exactly right last month.

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