Spokane Weather in September

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

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

September is in the fall / autumn in Spokane and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 8°C (46°F) is normal.

Spokane weather averages (imperial / metric)
Daytime temperature 22.7°C 72.8°F
Nightly temperature 7.6°C 45.6°F
Average temperature 15.1°C 59.2°F
Daily sunshine 9.6 hrs
Avg rainfall 20 mm 0.8 ins
Rainy days 6 days
Sea temperature 12.8°C 55.1°F
Humidity 55%
Windspeed 13.3kph 8 mph

On average September is the 3rd driest month of the year in Spokane with around 20mm 0.8 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 9.6 hours of sunshine per day.

September temperatures in Spokane

Spokane average temperature in September

September rainfall

Spokane average rain in September

September hourly sunshine

Spokane 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 Spokane in September 2024.