Dale City Weather in September

What's the weather like in Dale City (Virginia) in September 2025?

The climate in Dale City during September can be summarized as warm, humid and a little damp.

September is in the fall / autumn in Dale City and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 15°C (60°F) is normal.

Dale City weather averages (imperial / metric)
Daytime temperature 26.2°C 79.2°F
Nightly temperature 15.4°C 59.7°F
Average temperature 20.8°C 69.4°F
Daily sunshine 8.1 hrs
Avg rainfall 80 mm 3.1 ins
Rainy days 8 days
Sea temperature 22.1°C 71.7°F
Humidity 73%
Windspeed 12.2kph 8 mph

On average September is the 6th driest month of the year in Dale City with around 80mm 3.1 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.1 hours of sunshine per day.

September temperatures in Dale City

Dale City average temperature in September

September rainfall

Dale City average rain in September

September hourly sunshine

Dale City 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 Dale City 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

Dale City weather stats

Dale City weather statistics
Hottest month: July 30.5°C 86.9°F
Driest month: January 69mm 2.7ins
Sunniest month: June 10.2hrs
Coldest month: January 5.8°C 42.4°F
Wettest month: August 103mm 4.1ins
Map showing location of Dale City (38.63706, -77.31109) Dale City map pin © Google

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