Concord Weather in September

What's the weather like in Concord (New Hampshire) in September 2025?

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

September is in the fall / autumn in Concord and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 9°C (48°F) is normal.

Concord weather averages (imperial / metric)
Daytime temperature 22.4°C 72.2°F
Nightly temperature 8.7°C 47.6°F
Average temperature 15.5°C 59.9°F
Daily sunshine 7.7 hrs
Avg rainfall 74 mm 2.9 ins
Rainy days 9 days
Sea temperature 16°C 60.8°F
Humidity 76%
Windspeed 11.2kph 7 mph

On average September is the 4th driest month of the year in Concord with around 74mm 2.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.7 hours of sunshine per day.

September temperatures in Concord

Concord average temperature in September

September rainfall

Concord average rain in September

September hourly sunshine

Concord 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 Concord 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

Concord weather stats

Concord weather statistics
Hottest month: July 27.8°C 82°F
Driest month: February 64mm 2.5ins
Sunniest month: July 10.1hrs
Coldest month: January -0.8°C 30.6°F
Wettest month: November 94mm 3.7ins
Map showing location of Concord (43.20814, -71.53757) Concord map pin © Google

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