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September Weather in Three Lakes, United States

Last updated: June 24, 2025

In Three Lakes, United States, the average temperature in September hovers around 15°C (59°F). Expect a minimum of 0°C (32°F) and a comfortable maximum of 31°C (88°F). Be prepared for some rain, as the area receives an average precipitation of 93 mm (3.7 in) over about 11 days during the month, with an average humidity of 78%.

September Temperature in Three Lakes

In September in Three Lakes, the average temperature is 15°C (59°F). Maximums can reach 31°C (88°F), and minimums can be as low as 0°C (32°F). Pack accordingly to enjoy a range of weather while exploring the diverse attractions of Three Lakes.

September Weather in Three Lakes: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Three Lakes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Three Lakes, September typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (88°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec151527385465696559453021
Data source: Temperature data for Three Lakes 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 Three Lakes

In Three Lakes in September, the precipitation amount is 93 mm (3.7 in) over the course of 11 days, indicating that rain is expected to be fairly frequent during that time.

September Precipitation Trends in Three Lakes

The chart displays monthly precipitation patterns in Three Lakes, 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 Three Lakes, September typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec3351479183105103111931145157
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Three Lakes

In Three Lakes in September, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

September Average Humidity in Three Lakes

This chart illustrates the average monthly humidity levels in Three Lakes, 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 Three Lakes is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Three Lakes

In Three Lakes 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 Three Lakes.

Maximum UV Index Levels in Three Lakes for September

The chart shows the monthly maximum UV Index (UVI) for Three Lakes 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 Three Lakes typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458810997532
Data source: Three Lakes 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 Three Lakes Compares to Other Months

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

This table compares monthly weather conditions in Three Lakes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (15°F)33 mm (1.3 inches)89%low
February Weather-9°C (15°F)51 mm (2.0 inches)90%moderate
March Weather-3°C (28°F)47 mm (1.9 inches)87%moderate
April Weather3°C (38°F)91 mm (3.6 inches)84%very high
May Weather12°C (54°F)83 mm (3.3 inches)77%very high
June Weather18°C (65°F)105 mm (4.1 inches)75%very high
July Weather21°C (69°F)103 mm (4.1 inches)74%very high
August Weather18°C (66°F)111 mm (4.4 inches)73%very high
September Weather15°C (59°F)93 mm (3.7 inches)78%high
October Weather7°C (45°F)114 mm (4.5 inches)84%moderate
November Weather-1°C (30°F)51 mm (2.0 inches)89%moderate
December Weather-6°C (21°F)57 mm (2.3 inches)87%low

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