Pomeroy Weather in September

What's the weather like in Pomeroy (Washington) in September 2025?

The climate in Pomeroy during September can be summarized as mild and dry.

September is in the fall / autumn in Pomeroy and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 6°C (43°F) is normal.

Pomeroy weather averages (imperial / metric)
Daytime temperature 23°C 73.3°F
Nightly temperature 6.1°C 42.9°F
Average temperature 14.5°C 58.1°F
Daily sunshine 9.9 hrs
Avg rainfall 24 mm 0.9 ins
Rainy days 6 days
Sea temperature 13.2°C 55.8°F
Humidity 51%
Windspeed 13.7kph 9 mph

On average September is the 3rd driest month of the year in Pomeroy with around 24mm 0.9 inches of rain making it a dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.9 hours of sunshine per day.

September temperatures in Pomeroy

Pomeroy average temperature in September

September rainfall

Pomeroy average rain in September

September hourly sunshine

Pomeroy average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Pomeroy in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Pomeroy weather stats

Pomeroy weather statistics
Hottest month: July 28°C 82.4°F
Driest month: July 16mm 0.6ins
Sunniest month: July 13.9hrs
Coldest month: January 1.9°C 35.4°F
Wettest month: December 66mm 2.6ins
Map showing location of Pomeroy (46.47487, -117.60269) Pomeroy map pin © Google

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