Weather Forecast Accuracy Last Month (August)

Weather Forecast Accuracy Last Year (2021)

Weather Changeability for Herndon, Virginia

Average change in

Temperature

Average change in high temperature day-to-day

Last Month:

3.1°

Last Year:

5.8°

Average change in low temperature day-to-day

Last Month:

5.1°

Last Year:

7.0°

Average change in

Precipitation

Chance of dry day after a precip day

Last Month:

71%

Last Year:

58%

Chance of precip day after a dry day

Last Month:

50%

Last Year:

25%

ForecastAdvisor Fact

On average, World Weather Online's high temperature forecasts for Herndon were off by 3.05 degrees last month.

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