Islip Weather in September

What's the weather like in Islip (New York) in September 2024?

The climate in Islip during September can be summarized as warm and a little damp.

September is in the fall / autumn in Islip and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 14°C (58°F) is normal.

Islip weather averages (imperial / metric)
Daytime temperature 23.8°C 74.8°F
Nightly temperature 14.3°C 57.7°F
Average temperature 19°C 66.2°F
Daily sunshine 8 hrs
Avg rainfall 89 mm 3.5 ins
Rainy days 8 days
Sea temperature 20.6°C 69.1°F
Humidity 75%
Windspeed 16.9kph 11 mph

On average September is the 4th driest month of the year in Islip with around 89mm 3.5 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 8 hours of sunshine per day.

September temperatures in Islip

Islip average temperature in September

September rainfall

Islip average rain in September

September hourly sunshine

Islip 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 Islip 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

Islip weather stats

Islip weather statistics
Hottest month: July 27.8°C 82°F
Driest month: February 85mm 3.3ins
Sunniest month: August 9.1hrs
Coldest month: January 3.2°C 37.8°F
Wettest month: March 106mm 4.2ins
Map showing location of Islip (40.72982, -73.21039) Islip map pin © Google

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