Pendleton Weather in September

What's the weather like in Pendleton (Oregon) in September 2025?

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

September is in the fall / autumn in Pendleton and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (76°F), whilst at night 9°C (49°F) is normal.

Pendleton weather averages (imperial / metric)
Daytime temperature 24.6°C 76.3°F
Nightly temperature 9.2°C 48.6°F
Average temperature 16.9°C 62.4°F
Daily sunshine 9.8 hrs
Avg rainfall 16 mm 0.6 ins
Rainy days 5 days
Sea temperature 13.5°C 56.3°F
Humidity 48%
Windspeed 13.7kph 9 mph

On average September is the 3rd driest month of the year in Pendleton with around 16mm 0.6 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.8 hours of sunshine per day.

September temperatures in Pendleton

Pendleton average temperature in September

September rainfall

Pendleton average rain in September

September hourly sunshine

Pendleton 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 Pendleton 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

Pendleton weather stats

Pendleton weather statistics
Hottest month: July 30.4°C 86.7°F
Driest month: July 10mm 0.4ins
Sunniest month: July 13.3hrs
Coldest month: January 4.2°C 39.6°F
Wettest month: December 44mm 1.7ins
Map showing location of Pendleton (45.67208, -118.7886) Pendleton map pin © Google

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