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September Weather in Cissna Park, United States

Last updated: June 24, 2025

In Cissna Park, United States, the average temperature in September hovers around 21°C (70°F). This month can experience a range of temperatures, with a minimum of 5°C (42°F) and a peak of 34°C (94°F). Rainfall is expected, with an average precipitation of 85 mm (3.3 in) over 8 days, contributing to an average humidity of 80%.

September Temperature in Cissna Park

In September in Cissna Park, the average temperature is 21°C (70°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 5°C (42°F). This makes it an ideal time for travelers who enjoy warm weather but should also be prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Cissna Park, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cissna Park, September typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec283042516474777470574135
Data source: Temperature data for Cissna 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 Cissna Park

In Cissna Park in September, the precipitation amount is 85 mm (3.3 in) over the course of 8 days.

September Precipitation Trends in Cissna Park

The chart displays monthly precipitation patterns in Cissna 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 Cissna Park, September typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec737311312115011081104851227254
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cissna Park

In Cissna Park in September humidity is 80%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can make even short walks feel draining, urging travelers to seek shade or a cool drink frequently.

September Average Humidity in Cissna Park

This chart illustrates the average monthly humidity levels in Cissna 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 Cissna Park is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cissna Park

In Cissna 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 Cissna Park.

Maximum UV Index Levels in Cissna Park for September

The chart shows the monthly maximum UV Index (UVI) for Cissna 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 Cissna Park typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
Data source: Cissna 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 Cissna Park Compares to Other Months

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

This table compares monthly weather conditions in Cissna Park, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)73 mm (2.9 inches)82%moderate
February Weather-1°C (30°F)73 mm (2.9 inches)83%moderate
March Weather5°C (42°F)113 mm (4.5 inches)84%high
April Weather11°C (52°F)121 mm (4.7 inches)85%very high
May Weather18°C (64°F)150 mm (5.9 inches)79%very high
June Weather23°C (74°F)109 mm (4.3 inches)82%extreme
July Weather25°C (77°F)81 mm (3.2 inches)80%very high
August Weather23°C (74°F)104 mm (4.1 inches)81%very high
September Weather21°C (70°F)85 mm (3.3 inches)80%very high
October Weather14°C (57°F)122 mm (4.8 inches)82%high
November Weather5°C (41°F)72 mm (2.8 inches)88%moderate
December Weather2°C (35°F)54 mm (2.1 inches)84%low

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