Bellingham Weather in September

What's the weather like in Bellingham (Washington) in September 2024?

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

September is in the fall / autumn in Bellingham and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 19°C (67°F), whilst at night 9°C (48°F) is normal.

Bellingham weather averages (imperial / metric)
Daytime temperature 19.2°C 66.5°F
Nightly temperature 8.9°C 47.9°F
Average temperature 14°C 57.2°F
Daily sunshine 6.8 hrs
Avg rainfall 67 mm 2.6 ins
Rainy days 10 days
Sea temperature 12.8°C 55°F
Humidity 77%
Windspeed 10.4kph 7 mph

On average September is the 4th driest month of the year in Bellingham with around 67mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.8 hours of sunshine per day.

September temperatures in Bellingham

Bellingham average temperature in September

September rainfall

Bellingham average rain in September

September hourly sunshine

Bellingham 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 Bellingham in September 2024.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Bellingham weather stats

Bellingham weather statistics
Hottest month: August 21.6°C 70.9°F
Driest month: July 40mm 1.6ins
Sunniest month: July 9.9hrs
Coldest month: January 5.8°C 42.4°F
Wettest month: December 151mm 5.9ins
Map showing location of Bellingham (48.75955, -122.48822) Bellingham map pin © Google

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