Tempe Weather in September

What's the weather like in Tempe (Arizona) in September 2025?

The climate in Tempe during September can be summarized as very hot and dry.

September is in the fall / autumn in Tempe and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a warm 37°C (98°F), whilst at night 21°C (70°F) is normal.

Tempe weather averages (imperial / metric)
Daytime temperature 36.6°C 97.8°F
Nightly temperature 20.9°C 69.5°F
Average temperature 28.7°C 83.7°F
Daily sunshine 11.7 hrs
Avg rainfall 21 mm 0.8 ins
Rainy days 3 days
Sea temperature 21.6°C 70.9°F
Humidity 37%
Windspeed 12.2kph 8 mph

On average September is the 6th wettest month of the year in Tempe with around 21mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.

On the flip side this corresponds to an average of 11.7 hours of sunshine per day.

September temperatures in Tempe

Tempe average temperature in September

September rainfall

Tempe average rain in September

September hourly sunshine

Tempe 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 Tempe 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

Tempe weather stats

Tempe weather statistics
Hottest month: July 40.4°C 104.7°F
Driest month: June 2mm 0.1ins
Sunniest month: June 14.4hrs
Coldest month: January 18.4°C 65.1°F
Wettest month: August 29mm 1.1ins
Map showing location of Tempe (33.41477, -111.90931) Tempe map pin © Google

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