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September Weather in Allison Park, United States

Last updated: June 24, 2025

In September, the average temperature in Allison Park, United States hovers around 20°C (68°F), creating a mild and enjoyable climate. Temperatures can vary significantly, with a minimum of 5°C (40°F) and a maximum reaching up to 34°C (93°F). Expect about 128 mm (5.0 in) of precipitation spread over 10 days, contributing to an average humidity of 77%.

September Temperature in Allison Park

In September in Allison Park, the average temperature is 20°C (68°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as 5°C (40°F). It's a great time to visit for those who enjoy mild weather with the option of some warm days.

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

The chart illustrates September temperature patterns in Allison Park, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Allison Park, September typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec313541516270757367574236
Data source: Temperature data for Allison 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 Allison Park

In Allison Park in September, the total precipitation amount is 128 mm (5.0 in) recorded over a span of 10 days.

September Precipitation Trends in Allison Park

The chart displays monthly precipitation patterns in Allison 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 Allison Park, September typically receives around 128 mm (5.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec951261091321511551548912812894102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Allison Park

In Allison Park in September, humidity is 77%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace, making it essential for travelers to stay hydrated and take breaks in shaded areas to avoid feeling sluggish in the heat.

September Average Humidity in Allison Park

This chart illustrates the average monthly humidity levels in Allison 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 Allison Park is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Allison Park

In Allison 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 Allison Park.

Maximum UV Index Levels in Allison Park for September

The chart shows the monthly maximum UV Index (UVI) for Allison 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 Allison Park typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Allison 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 Allison Park Compares to Other Months

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

This table compares monthly weather conditions in Allison Park, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)95 mm (3.7 inches)88%moderate
February Weather1°C (35°F)125 mm (4.9 inches)88%moderate
March Weather5°C (42°F)109 mm (4.3 inches)87%high
April Weather11°C (52°F)132 mm (5.2 inches)87%very high
May Weather17°C (63°F)150 mm (5.9 inches)81%very high
June Weather21°C (70°F)155 mm (6.1 inches)83%very high
July Weather24°C (75°F)154 mm (6.1 inches)82%very high
August Weather23°C (73°F)89 mm (3.5 inches)76%very high
September Weather20°C (68°F)128 mm (5.0 inches)77%very high
October Weather14°C (57°F)128 mm (5.0 inches)82%high
November Weather5°C (42°F)94 mm (3.7 inches)89%moderate
December Weather2°C (36°F)102 mm (4.0 inches)86%low

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