ClimateAverages

Washington Weather in September

JanFebMarAprMayJunJulAugSepOctNovDec
Right now
16°C
Fog · feels like 16°C
Humidity
98%
Wind
6 kph NE
UV
0
Rain
0%
Updated Aug 28, 01:00 AMWeather data by WeatherAPI.com
September daytime high
15.9°C
September overnight low
8.8°C
September average
12.4°C

In September, Washington typically sees daytime highs of 15.9°C and overnight lows around 8.8°C. Compared to the annual average high of 11.4°C, September runs +4.5°C.

vs. annual avg high
+4.5°C
Rank among 12 months
#4 warmest
Hottest year overall
2006

Where September ranks in Washington

JanFebMarAprMayJunJulAugSep16°OctNovDec

FAQ

What is the average temperature in Washington in September?

September in Washington averages a daytime high of 15.9°C and an overnight low of 8.8°C.

Is September warm or cold in Washington?

September runs +4.5°C compared to Washington's annual average high of 11.4°C, ranking #4 of 12 months by warmth.

What should I pack for Washington in September?

Plan for daytime highs near 15.9°C and cooler evenings around 8.8°C.

Other months for Washington

JanuaryFebruaryMarchAprilMayJuneJulyAugustOctoberNovemberDecember

September in nearby cities

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