Weather Forecast Accuracy Last Month (December)

Weather Forecast Accuracy Last Year (2021)

Weather Changeability for Chatham, Massachusetts

Average change in

Temperature

Average change in high temperature day-to-day

Last Month:

7.4°

Last Year:

5.0°

Average change in low temperature day-to-day

Last Month:

6.0°

Last Year:

5.7°

Average change in

Precipitation

Chance of dry day after a precip day

Last Month:

54%

Last Year:

55%

Chance of precip day after a dry day

Last Month:

56%

Last Year:

31%

ForecastAdvisor Fact

On average, Weather Underground's high temperature forecasts for Chatham were off by 1.67 degrees last month.

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