Laconia Weather in September

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

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

September is in the fall / autumn in Laconia and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (71°F), whilst at night 8°C (46°F) is normal.

Laconia weather averages (imperial / metric)
Daytime temperature 21.5°C 70.7°F
Nightly temperature 7.9°C 46.2°F
Average temperature 14.7°C 58.5°F
Daily sunshine 7.4 hrs
Avg rainfall 77 mm 3 ins
Rainy days 9 days
Sea temperature 16°C 60.8°F
Humidity 77%
Windspeed 11.2kph 7 mph

On average September is the 4th driest month of the year in Laconia with around 77mm 3 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 7.4 hours of sunshine per day.

September temperatures in Laconia

Laconia average temperature in September

September rainfall

Laconia average rain in September

September hourly sunshine

Laconia 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 Laconia 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

Laconia weather stats

Laconia weather statistics
Hottest month: July 27°C 80.6°F
Driest month: February 65mm 2.6ins
Sunniest month: July 9.8hrs
Coldest month: January -1.6°C 29.1°F
Wettest month: November 102mm 4ins
Map showing location of Laconia (43.52785, -71.47035) Laconia map pin © Google

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