Weather Forecast Accuracy Last Month (August)

Weather Forecast Accuracy Last Year (2020)

Weather Changeability for Chatham, Massachusetts

Average change in

Temperature

Average change in high temperature day-to-day

Last Month:

4.0°

Last Year:

5.1°

Average change in low temperature day-to-day

Last Month:

3.4°

Last Year:

6.7°

Average change in

Precipitation

Chance of dry day after a precip day

Last Month:

33%

Last Year:

57%

Chance of precip day after a dry day

Last Month:

25%

Last Year:

27%

ForecastAdvisor Fact

77.0% of Weather Underground's low temperature forecasts for Chatham were within 3 degrees of actual temperatures last year.

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