Salem Weather in September

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

The climate in Salem during September can be summarized as mild and a little damp.

September is in the fall / autumn in Salem and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 10°C (51°F) is normal.

Salem weather averages (imperial / metric)
Daytime temperature 22.6°C 72.7°F
Nightly temperature 10.4°C 50.7°F
Average temperature 16.5°C 61.7°F
Daily sunshine 8.1 hrs
Avg rainfall 86 mm 3.4 ins
Rainy days 9 days
Sea temperature 17.8°C 64.1°F
Humidity 74%
Windspeed 13.3kph 8 mph

On average September is the 4th driest month of the year in Salem with around 86mm 3.4 inches of rain making it a a little damp 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 8.1 hours of sunshine per day.

September temperatures in Salem

Salem average temperature in September

September rainfall

Salem average rain in September

September hourly sunshine

Salem 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 Salem 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

Salem weather stats

Salem weather statistics
Hottest month: July 27.8°C 82°F
Driest month: August 82mm 3.2ins
Sunniest month: July 10.2hrs
Coldest month: January 0.5°C 32.9°F
Wettest month: November 115mm 4.5ins
Map showing location of Salem (42.78842, -71.20089) Salem map pin © Google

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