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September Weather in Deer River, United States

Last updated: June 24, 2025

In September, the average temperature in Deer River, United States hovers around 15°C (59°F). During this time, temperatures can dip to a chilly 1°C (33°F) or soar up to a warm 29°C (84°F). Expect a total precipitation of 108 mm (4.2 in) spread over approximately 12 days, contributing to an average humidity of 77%.

September Temperature in Deer River

In September in Deer River, the average temperature is 15°C (59°F). Maximum temperatures can reach 29°C (84°F), while minimums can drop as low as 1°C (33°F). This diverse climate makes it an ideal time for travelers to experience a range of outdoor activities and enjoy the beauty of the season.

September Weather in Deer River: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Deer River, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Deer River, September typically has an average temperature of 15°C (59°F), with highs reaching up to 29°C (84°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec101027375365706759442817
Data source: Temperature data for Deer River 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 Deer River

In Deer River in September, the total precipitation amount is 108 mm (4.2 in) spread over 12 days.

September Precipitation Trends in Deer River

The chart displays monthly precipitation patterns in Deer River, 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 Deer River, September typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec22253361568197801081053351
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Deer River

In Deer River in September, humidity is 77%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making it essential to stay hydrated and choose light, breathable clothing for comfortable travel.

September Average Humidity in Deer River

This chart illustrates the average monthly humidity levels in Deer River, 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 Deer River is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%88%83%76%76%76%77%77%82%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Deer River

In Deer River 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 Deer River.

Maximum UV Index Levels in Deer River for September

The chart shows the monthly maximum UV Index (UVI) for Deer River 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 Deer River typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: Deer River 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 Deer River Compares to Other Months

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

This table compares monthly weather conditions in Deer River, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-12°C (11°F)22 mm (0.9 inches)92%low
February Weather-12°C (10°F)25 mm (1.0 inches)93%moderate
March Weather-3°C (27°F)33 mm (1.3 inches)88%moderate
April Weather3°C (37°F)61 mm (2.4 inches)83%high
May Weather12°C (53°F)56 mm (2.2 inches)76%very high
June Weather18°C (66°F)81 mm (3.2 inches)76%very high
July Weather21°C (70°F)97 mm (3.8 inches)76%very high
August Weather19°C (67°F)80 mm (3.1 inches)77%very high
September Weather15°C (59°F)108 mm (4.2 inches)77%high
October Weather7°C (45°F)105 mm (4.1 inches)82%moderate
November Weather-2°C (28°F)33 mm (1.3 inches)87%moderate
December Weather-8°C (18°F)51 mm (2.0 inches)89%low

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