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September Weather in Loon Lake, United States

Last updated: June 24, 2025

In September, the average temperature in Loon Lake, United States is a comfortable 16°C (61°F). Expect temperature swings, with minimums dipping to 1°C (34°F) and maximums reaching 34°C (94°F). During this month, you can anticipate 31 mm (1.2 in) of precipitation spread over approximately 5 days, contributing to an average humidity level of 60%.

September Temperature in Loon Lake

In September in Loon Lake, the average temperature is 16°C (61°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 1°C (34°F). This diverse range of temperatures makes it essential to pack a variety of clothing options for your travels.

September Weather in Loon Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Loon Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Loon Lake, September typically has an average temperature of 16°C (61°F), with highs reaching up to 34°C (94°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec292838465766747261463630
Data source: Temperature data for Loon Lake 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 Loon Lake

In Loon Lake in September, the precipitation amount is 31 mm (1.2 in) spread over 5 days.

September Precipitation Trends in Loon Lake

The chart displays monthly precipitation patterns in Loon Lake, 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 Loon Lake, September typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec78595954482241531536974
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Loon Lake

In Loon Lake in September, humidity is 60%. With an average temperature of 16°C (61°F), this humidity feels like a refreshing yet slightly clingy embrace, making it ideal for leisurely sightseeing, though it might leave you reaching for a cool drink more often.

September Average Humidity in Loon Lake

This chart illustrates the average monthly humidity levels in Loon Lake, 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 Loon Lake is approximately 60%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%82%77%79%77%62%60%80%87%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Loon Lake

In Loon Lake 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 Loon Lake.

Maximum UV Index Levels in Loon Lake for September

The chart shows the monthly maximum UV Index (UVI) for Loon Lake 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 Loon Lake typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245689997432
Data source: Loon Lake 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 Loon Lake Compares to Other Months

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

This table compares monthly weather conditions in Loon Lake, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)78 mm (3.1 inches)85%low
February Weather-2°C (29°F)59 mm (2.3 inches)86%moderate
March Weather3°C (38°F)59 mm (2.3 inches)86%moderate
April Weather8°C (46°F)54 mm (2.1 inches)82%high
May Weather14°C (58°F)48 mm (1.9 inches)77%very high
June Weather19°C (66°F)22 mm (0.9 inches)79%very high
July Weather23°C (74°F)4 mm (0.2 inches)77%very high
August Weather22°C (72°F)15 mm (0.6 inches)62%very high
September Weather16°C (61°F)31 mm (1.2 inches)60%high
October Weather8°C (46°F)53 mm (2.1 inches)80%moderate
November Weather2°C (37°F)69 mm (2.7 inches)87%moderate
December Weather-1°C (30°F)74 mm (2.9 inches)86%low

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