Ellicott City Weather in September

What's the weather like in Ellicott City (Maryland) in September 2025?

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

September is in the fall / autumn in Ellicott City and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (78°F), whilst at night 15°C (58°F) is normal.

Ellicott City weather averages (imperial / metric)
Daytime temperature 25.8°C 78.4°F
Nightly temperature 14.6°C 58.3°F
Average temperature 20.2°C 68.4°F
Daily sunshine 7.9 hrs
Avg rainfall 92 mm 3.6 ins
Rainy days 8 days
Sea temperature 21.1°C 70°F
Humidity 72%
Windspeed 13kph 8 mph

On average September is the 6th wettest month of the year in Ellicott City with around 92mm 3.6 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 7.9 hours of sunshine per day.

September temperatures in Ellicott City

Ellicott City average temperature in September

September rainfall

Ellicott City average rain in September

September hourly sunshine

Ellicott 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 Ellicott 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

Ellicott City weather stats

Ellicott City weather statistics
Hottest month: July 30.4°C 86.7°F
Driest month: February 77mm 3ins
Sunniest month: July 10hrs
Coldest month: January 4.4°C 39.9°F
Wettest month: May 104mm 4.1ins
Map showing location of Ellicott City (39.26733, -76.79831) Ellicott City map pin © Google

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