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September Weather in Sand Lake, United States

Last updated: June 24, 2025

In September, the average temperature in Sand Lake, United States is a pleasant 17°C (63°F). However, be prepared for a range, as it can drop to a cool 2°C (37°F) or soar to a warm 32°C (89°F). Expect around 70 mm (2.7 in) of precipitation spread over 10 days, contributing to an average humidity of 79%.

September Temperature in Sand Lake

In September in Sand Lake, the average temperature is 17°C (63°F). Maximums can reach 32°C (89°F) while minimums can be as low as 2°C (37°F). This range makes it a great time to explore the area, so be sure to pack accordingly for both warm days and cooler nights.

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

The chart illustrates September temperature patterns in Sand Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sand Lake, September typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (89°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec232332435566727062513729
Data source: Temperature data for Sand 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 Sand Lake

In Sand Lake in September, the precipitation amount is 70 mm (2.7 in) spread over a span of 10 days.

September Precipitation Trends in Sand Lake

The chart displays monthly precipitation patterns in Sand 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 Sand Lake, September typically receives around 70 mm (2.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4949528593978387701115757
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sand Lake

In Sand Lake in September, humidity is 79%. With an average temperature of 17°C (63°F), this humidity feels like a warm, muggy embrace, making outdoor activities less comfortable and prompting travelers to seek shaded areas or cool refreshments more frequently.

September Average Humidity in Sand Lake

This chart illustrates the average monthly humidity levels in Sand 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 Sand Lake is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%91%87%86%79%75%75%75%79%85%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sand Lake

In Sand 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 Sand Lake.

Maximum UV Index Levels in Sand Lake for September

The chart shows the monthly maximum UV Index (UVI) for Sand 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 Sand Lake typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910987532
Data source: Sand 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 Sand Lake Compares to Other Months

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

This table compares monthly weather conditions in Sand Lake, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)49 mm (1.9 inches)92%low
February Weather-5°C (23°F)49 mm (1.9 inches)91%moderate
March Weather0°C (32°F)52 mm (2.1 inches)87%moderate
April Weather6°C (43°F)85 mm (3.4 inches)85%very high
May Weather13°C (55°F)92 mm (3.6 inches)79%very high
June Weather19°C (66°F)97 mm (3.8 inches)75%very high
July Weather22°C (72°F)83 mm (3.3 inches)75%very high
August Weather21°C (70°F)87 mm (3.4 inches)75%very high
September Weather17°C (63°F)70 mm (2.7 inches)79%high
October Weather11°C (51°F)111 mm (4.4 inches)85%moderate
November Weather3°C (37°F)57 mm (2.2 inches)88%moderate
December Weather-2°C (29°F)57 mm (2.3 inches)89%low

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