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September Weather in Island Park, United States

Last updated: June 24, 2025

In September, the average temperature in Island Park, United States is a pleasant 21°C (71°F), with daily fluctuations ranging from a cool 11°C (52°F) to a warm 31°C (87°F). Expect about 97 mm (3.8 in) of precipitation spread over 10 days, contributing to an average humidity of 68%. Ideal for those who enjoy a balance of warmth and occasional rain!

September Temperature in Island Park

In September in Island Park, the average temperature is 21°C (71°F). Maximum temperatures can reach 31°C (87°F) while minimums can drop to as low as 11°C (52°F). This pleasant climate makes it an ideal time to explore the outdoors and enjoy various activities in Island Park.

September Weather in Island Park: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Island Park, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Island Park, September typically has an average temperature of 21°C (71°F), with highs reaching up to 31°C (87°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec363741505969777570624841
Data source: Temperature data for Island Park generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Island Park

In Island Park in September, the total precipitation amount is 97 mm (3.8 in) over a span of 10 days.

September Precipitation Trends in Island Park

The chart displays monthly precipitation patterns in Island Park, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Island Park, September typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec801271071261268612711697145101133
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Island Park

In Island Park in September, humidity is 68%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making traveling a bit sticky but also inviting for leisurely strolls and outdoor adventures.

September Average Humidity in Island Park

This chart illustrates the average monthly humidity levels in Island Park, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Island Park is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Island Park

In Island Park in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Island Park.

Maximum UV Index Levels in Island Park for September

The chart shows the monthly maximum UV Index (UVI) for Island Park in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Island Park typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Island Park September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Island Park Compares to Other Months

Weather in Island Park varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Island Park, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Island Park, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)80 mm (3.2 inches)84%moderate
February Weather3°C (38°F)127 mm (5.0 inches)82%moderate
March Weather5°C (42°F)106 mm (4.2 inches)81%high
April Weather10°C (50°F)126 mm (5.0 inches)78%very high
May Weather15°C (59°F)126 mm (5.0 inches)69%very high
June Weather21°C (69°F)86 mm (3.4 inches)69%very high
July Weather25°C (77°F)127 mm (5.0 inches)62%very high
August Weather24°C (76°F)116 mm (4.6 inches)65%very high
September Weather21°C (71°F)97 mm (3.8 inches)68%very high
October Weather16°C (62°F)144 mm (5.7 inches)74%high
November Weather9°C (49°F)101 mm (4.0 inches)82%moderate
December Weather5°C (41°F)133 mm (5.2 inches)80%low

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