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September Weather in Star Prairie, United States

Last updated: June 24, 2025

In Star Prairie, United States, the average temperature in September hovers around 17°C (63°F), making it a delightful time to explore. Temperatures can dip as low as 1°C (34°F), while you might also experience highs of 32°C (90°F). Expect 104 mm (4.1 in) of precipitation spread across 10 days, with the average humidity sitting at a humid 81%. Whether you're packing for warmth or lightness, be prepared for a mix of weather!

September Temperature in Star Prairie

In September in Star Prairie, the average temperature is 17°C (63°F). Maximums can reach 32°C (90°F), while minimums can drop as low as 1°C (34°F). Be prepared for a range of temperatures during your travels.

September Weather in Star Prairie: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Star Prairie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Star Prairie, 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 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec161632425870736963473222
Data source: Temperature data for Star Prairie 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 Star Prairie

In Star Prairie in September, the precipitation amount is 104 mm (4.1 in) over a period of 10 days.

September Precipitation Trends in Star Prairie

The chart displays monthly precipitation patterns in Star Prairie, 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 Star Prairie, September typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec273754881301061041251041014157
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Star Prairie

In Star Prairie in September humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

September Average Humidity in Star Prairie

This chart illustrates the average monthly humidity levels in Star Prairie, 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 Star Prairie is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%90%85%84%78%80%81%81%81%84%88%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Star Prairie

In Star Prairie 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 Star Prairie.

Maximum UV Index Levels in Star Prairie for September

The chart shows the monthly maximum UV Index (UVI) for Star Prairie 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 Star Prairie typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Star Prairie 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 Star Prairie Compares to Other Months

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

This table compares monthly weather conditions in Star Prairie, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)27 mm (1.1 inches)87%low
February Weather-9°C (16°F)37 mm (1.5 inches)90%moderate
March Weather0°C (32°F)54 mm (2.1 inches)85%moderate
April Weather6°C (43°F)88 mm (3.5 inches)84%high
May Weather14°C (58°F)130 mm (5.1 inches)78%very high
June Weather21°C (70°F)106 mm (4.2 inches)80%very high
July Weather23°C (73°F)103 mm (4.1 inches)81%very high
August Weather21°C (69°F)125 mm (4.9 inches)81%very high
September Weather17°C (63°F)104 mm (4.1 inches)81%high
October Weather8°C (48°F)101 mm (4.0 inches)84%moderate
November Weather0°C (32°F)41 mm (1.6 inches)88%moderate
December Weather-5°C (22°F)57 mm (2.2 inches)84%low

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