Weather Forecast Accuracy Last Month (September)

Weather Forecast Accuracy Last Year (2020)

Weather Changeability for Allentown, Pennsylvania

Average change in

Temperature

Average change in high temperature day-to-day

Last Month:

4.6°

Last Year:

5.5°

Average change in low temperature day-to-day

Last Month:

7.0°

Last Year:

7.5°

Average change in

Precipitation

Chance of dry day after a precip day

Last Month:

88%

Last Year:

62%

Chance of precip day after a dry day

Last Month:

36%

Last Year:

35%

ForecastAdvisor Fact

21.1% of Persistence's low temperature forecasts for Allentown were within 3 degrees of actual temperatures last month.

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