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September Weather in Long Lake, United States

Last updated: June 24, 2025

In September, the average temperature in Long Lake, United States is a comfortable 19°C (67°F). However, temperatures can vary significantly, with lows of 3°C (37°F) and highs reaching 33°C (92°F). This month sees an average precipitation of 89 mm (3.5 in) over approximately 10 days, contributing to a relatively high humidity level of 79%.

September Temperature in Long Lake

In September in Long Lake, the average temperature is 19°C (67°F). The maximum can reach 33°C (92°F), while the minimum can drop to as low as 3°C (37°F). This makes it a great time to travel for those who enjoy mild weather during the day but can also appreciate refreshing cool nights.

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

The chart illustrates September temperature patterns in Long Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Long Lake, September typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec242638475970757267533832
Data source: Temperature data for Long 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 Long Lake

In Long Lake in September, the precipitation amount is 89 mm (3.5 in) over a period of 10 days.

September Precipitation Trends in Long Lake

The chart displays monthly precipitation patterns in Long 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 Long Lake, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec6159711151631149191891215053
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Long Lake

In Long Lake in September, humidity is 79%. With an average temperature of 19°C (67°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit more challenging, as the air is thick and can leave you feeling sluggish during outdoor adventures.

September Average Humidity in Long Lake

This chart illustrates the average monthly humidity levels in Long 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 Long Lake is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Long Lake

In Long Lake 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 Long Lake.

Maximum UV Index Levels in Long Lake for September

The chart shows the monthly maximum UV Index (UVI) for Long 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 Long Lake typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Long 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 Long Lake Compares to Other Months

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

This table compares monthly weather conditions in Long Lake, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (24°F)61 mm (2.4 inches)85%moderate
February Weather-3°C (27°F)59 mm (2.3 inches)85%moderate
March Weather3°C (38°F)71 mm (2.8 inches)85%high
April Weather8°C (47°F)114 mm (4.5 inches)85%very high
May Weather15°C (60°F)163 mm (6.4 inches)78%very high
June Weather21°C (71°F)114 mm (4.5 inches)80%very high
July Weather24°C (75°F)91 mm (3.6 inches)78%very high
August Weather22°C (73°F)91 mm (3.6 inches)76%very high
September Weather19°C (67°F)89 mm (3.5 inches)79%very high
October Weather12°C (54°F)121 mm (4.8 inches)83%moderate
November Weather3°C (38°F)50 mm (2.0 inches)88%moderate
December Weather0°C (32°F)53 mm (2.1 inches)81%low

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