September Weather in Sleepy Eye, United States

Last updated: June 24, 2025

In September, the average temperature in Sleepy Eye, United States hovers around 18°C (65°F), with a range that can dip to a cool 2°C (36°F) and soar up to a balmy 33°C (92°F). Rainfall is moderate, totaling 127 mm (5.0 in) over about 9 days, while the air is quite humid, averaging around 81%. 🌧️

September Temperature in Sleepy Eye

In September, in Sleepy Eye, the average temperature is 18°C (65°F). The maximum can reach 33°C (92°F), while the minimum can be as low as 2°C (36°F). This temperature range makes Sleepy Eye an ideal destination for travelers seeking both warm days and cool nights.

September Weather in Sleepy Eye: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sleepy Eye, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sleepy Eye, September typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec171633445972747165493425
Data source: Temperature data for Sleepy Eye 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 Sleepy Eye

In Sleepy Eye in September, the precipitation amount is 127 mm (5.0 in) over a span of 9 days.

September Precipitation Trends in Sleepy Eye

The chart displays monthly precipitation patterns in Sleepy Eye, 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 Sleepy Eye, September typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec29306584130111122117127963242
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sleepy Eye

In Sleepy Eye in September, humidity is 81%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air thick and sultry—a challenging environment for traveling.

September Average Humidity in Sleepy Eye

This chart illustrates the average monthly humidity levels in Sleepy Eye, 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 Sleepy Eye 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 Sleepy Eye

In Sleepy Eye 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 Sleepy Eye.

Maximum UV Index Levels in Sleepy Eye for September

The chart shows the monthly maximum UV Index (UVI) for Sleepy Eye 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 Sleepy Eye typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3558910998532
Data source: Sleepy Eye 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 Sleepy Eye Compares to Other Months

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

This table compares monthly weather conditions in Sleepy Eye, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)29 mm (1.1 inches)87%moderate
February Weather-9°C (16°F)30 mm (1.2 inches)90%moderate
March Weather1°C (34°F)65 mm (2.5 inches)85%moderate
April Weather6°C (44°F)84 mm (3.3 inches)84%very high
May Weather15°C (60°F)130 mm (5.1 inches)78%very high
June Weather22°C (73°F)111 mm (4.4 inches)80%very high
July Weather24°C (75°F)121 mm (4.8 inches)81%very high
August Weather22°C (71°F)117 mm (4.6 inches)81%very high
September Weather18°C (65°F)127 mm (5.0 inches)81%very high
October Weather9°C (49°F)95 mm (3.8 inches)84%moderate
November Weather1°C (35°F)32 mm (1.3 inches)88%moderate
December Weather-4°C (25°F)42 mm (1.6 inches)84%low

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