Weather Forecast Accuracy Last Month (August)

Weather Forecast Accuracy Last Year (2021)

Weather Changeability for Portland, Oregon

Average change in

Temperature

Average change in high temperature day-to-day

Last Month:

5.8°

Last Year:

4.8°

Average change in low temperature day-to-day

Last Month:

5.7°

Last Year:

4.9°

Average change in

Precipitation

Chance of dry day after a precip day

Last Month:

100%

Last Year:

30%

Chance of precip day after a dry day

Last Month:

0%

Last Year:

18%

ForecastAdvisor Fact

11.0% of NWS Digital Forecast's high temperature forecasts for Portland were exactly right last year.

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