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August Weather in Stillwater, United States

Last updated: June 24, 2025

In Stillwater, United States during August, the average temperature is a warm 27°C (81°F), with fluctuations ranging from a pleasant 16°C (62°F) to a sizzling 38°C (101°F). Expect 91 mm (3.6 in) of precipitation spread over 9 days, accompanied by an average humidity of 68%. This delightful climate is perfect for those who enjoy a mix of sunshine and the occasional shower!

August Temperature in Stillwater

In August in Stillwater, the average temperature is 27°C (81°F). Maximums can reach 38°C (101°F), while minimums can dip as low as 16°C (62°F). Be prepared for warm weather, but also pack a light jacket for cooler evenings.

August Weather in Stillwater: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Stillwater, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stillwater, August typically has an average temperature of 27°C (81°F), with highs reaching up to 38°C (101°F) and lows dropping to around 16°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec394053596979828176625043
Data source: Temperature data for Stillwater 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.

August Precipitation in Stillwater

In Stillwater in August, the precipitation amount is 91 mm (3.6 in) spread over 9 days.

August Precipitation Trends in Stillwater

The chart displays monthly precipitation patterns in Stillwater, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Stillwater, August typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec5745861231431119091811083635
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Stillwater

In Stillwater in August, humidity is 68%. With an average temperature of 27°C (81°F), this humidity feels like a thick, warm blanket wrapping around you, making outdoor activities a bit uncomfortable but great for enjoying the local culture while sampling refreshing drinks and seeking shade.

August Average Humidity in Stillwater

This chart illustrates the average monthly humidity levels in Stillwater, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Stillwater is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%78%75%75%83%82%78%68%64%71%82%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Stillwater

In Stillwater in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Stillwater.

Maximum UV Index Levels in Stillwater for August

The chart shows the monthly maximum UV Index (UVI) for Stillwater in August, 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 August, the maximum UV index in Stillwater typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710101111109753
Data source: Stillwater August 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 August Weather in Stillwater Compares to Other Months

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

This table compares monthly weather conditions in Stillwater, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)57 mm (2.3 inches)79%moderate
February Weather5°C (41°F)45 mm (1.8 inches)78%high
March Weather12°C (53°F)86 mm (3.4 inches)75%high
April Weather15°C (59°F)123 mm (4.8 inches)75%very high
May Weather21°C (70°F)143 mm (5.6 inches)83%very high
June Weather26°C (79°F)110 mm (4.3 inches)81%extreme
July Weather28°C (83°F)90 mm (3.6 inches)78%extreme
August Weather27°C (81°F)91 mm (3.6 inches)68%very high
September Weather24°C (76°F)81 mm (3.2 inches)64%very high
October Weather16°C (62°F)108 mm (4.3 inches)71%high
November Weather10°C (50°F)36 mm (1.4 inches)82%moderate
December Weather6°C (44°F)35 mm (1.4 inches)87%moderate

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