New Castle Weather in September

What's the weather like in New Castle (New Hampshire) in September 2024?

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

September is in the fall / autumn in New Castle and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (72°F), whilst at night 10°C (49°F) is normal.

New Castle weather averages (imperial / metric)
Daytime temperature 22.5°C 72.4°F
Nightly temperature 9.6°C 49.2°F
Average temperature 16°C 60.8°F
Daily sunshine 8.2 hrs
Avg rainfall 87 mm 3.4 ins
Rainy days 9 days
Sea temperature 15.5°C 59.8°F
Humidity 75%
Windspeed 13.3kph 8 mph

On average September is the 6th driest month of the year in New Castle with around 87mm 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 8.2 hours of sunshine per day.

September temperatures in New Castle

New Castle average temperature in September

September rainfall

New Castle average rain in September

September hourly sunshine

New Castle 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 New Castle in September 2024.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

New Castle weather stats

New Castle weather statistics
Hottest month: July 27.3°C 81.1°F
Driest month: August 70mm 2.8ins
Sunniest month: July 10hrs
Coldest month: January 0.5°C 32.9°F
Wettest month: November 126mm 5ins
Map showing location of New Castle (43.07231, -70.71616) New Castle map pin © Google

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