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September Weather in Horicon, United States

Last updated: June 24, 2025

In September, the average temperature in Horicon, United States is a pleasant 18°C (64°F). Expect a temperature range that can dip as low as 1°C (35°F) and rise up to a warm 33°C (91°F). With an average humidity of 79%, the atmosphere can feel a bit sticky. Be prepared for some rain, as 93 mm (3.6 in) of precipitation may fall over 9 days.

September Temperature in Horicon

In September in Horicon, the average temperature is 18°C (64°F). Maximums can reach 33°C (91°F), and minimums can be as low as 1°C (35°F). Travelers should be prepared for a range of temperatures and pack accordingly for both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Horicon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Horicon, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec202134455869737064513628
Data source: Temperature data for Horicon 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 Horicon

In Horicon in September, the precipitation amount is 93 mm (3.6 in) during a span of 9 days.

September Precipitation Trends in Horicon

The chart displays monthly precipitation patterns in Horicon, 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 Horicon, September typically receives around 93 mm (3.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec48505810412011010397931124546
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Horicon

In Horicon in September, humidity is 79%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities more challenging but also creates a lush, vibrant atmosphere that's perfect for exploring local culture and scenery.

September Average Humidity in Horicon

This chart illustrates the average monthly humidity levels in Horicon, 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 Horicon is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Horicon

In Horicon 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 Horicon.

Maximum UV Index Levels in Horicon for September

The chart shows the monthly maximum UV Index (UVI) for Horicon 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 Horicon typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Horicon 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 Horicon Compares to Other Months

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

This table compares monthly weather conditions in Horicon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)48 mm (1.9 inches)85%moderate
February Weather-6°C (22°F)50 mm (2.0 inches)85%moderate
March Weather1°C (35°F)58 mm (2.3 inches)85%moderate
April Weather7°C (45°F)104 mm (4.1 inches)85%very high
May Weather15°C (59°F)120 mm (4.7 inches)78%very high
June Weather21°C (69°F)110 mm (4.3 inches)80%very high
July Weather23°C (74°F)102 mm (4.0 inches)78%very high
August Weather21°C (71°F)97 mm (3.8 inches)76%very high
September Weather18°C (64°F)93 mm (3.6 inches)79%high
October Weather10°C (51°F)112 mm (4.4 inches)83%moderate
November Weather2°C (36°F)45 mm (1.8 inches)88%moderate
December Weather-2°C (29°F)46 mm (1.8 inches)81%low

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