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September Weather in Gilsum, United States

Last updated: June 24, 2025

In September, the average temperature in Gilsum, United States hovers around 17°C (63°F). Expect temperatures to vary between a chilly 0°C (32°F) and a warm 32°C (90°F). During this month, anticipate 80 mm (3.1 in) of precipitation over approximately 8 days, contributing to an average humidity level of 71%.

September Temperature in Gilsum

In September in Gilsum, the average temperature is 17°C (63°F). The maximum can reach 32°C (90°F) and the minimum can be as low as 0°C (32°F). It's a great time to explore Gilsum, so be prepared for both warm days and cool nights.

September Weather in Gilsum: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Gilsum, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gilsum, September typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec252733455767727063523728
Data source: Temperature data for Gilsum 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 Gilsum

In Gilsum in September, the precipitation amount is 80 mm (3.1 in) over a period of 8 days.

September Precipitation Trends in Gilsum

The chart displays monthly precipitation patterns in Gilsum, 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 Gilsum, September typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec72857512381781198980135100113
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Gilsum

In Gilsum in September, humidity is 71%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet a bit sticky, so travelers should stay hydrated and take breaks in the shade.

September Average Humidity in Gilsum

This chart illustrates the average monthly humidity levels in Gilsum, 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 Gilsum is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gilsum

In Gilsum in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Gilsum.

Maximum UV Index Levels in Gilsum for September

The chart shows the monthly maximum UV Index (UVI) for Gilsum 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 Gilsum typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
Data source: Gilsum 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 Gilsum Compares to Other Months

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

This table compares monthly weather conditions in Gilsum, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)72 mm (2.8 inches)86%moderate
February Weather-3°C (27°F)85 mm (3.4 inches)84%moderate
March Weather1°C (33°F)75 mm (3.0 inches)82%high
April Weather7°C (45°F)123 mm (4.8 inches)80%very high
May Weather14°C (57°F)81 mm (3.2 inches)72%very high
June Weather19°C (67°F)78 mm (3.1 inches)72%very high
July Weather22°C (72°F)119 mm (4.7 inches)67%very high
August Weather21°C (71°F)89 mm (3.5 inches)66%very high
September Weather17°C (63°F)80 mm (3.1 inches)71%high
October Weather11°C (52°F)135 mm (5.3 inches)78%high
November Weather3°C (38°F)100 mm (3.9 inches)84%moderate
December Weather-2°C (29°F)112 mm (4.4 inches)81%low

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