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August Weather in Cottage Grove, United States

Last updated: June 24, 2025

In August, the average temperature in Cottage Grove, United States is a pleasant 21°C (69°F). However, temperatures can fluctuate, with a minimum of 7°C (44°F) and soaring to a maximum of 41°C (106°F). Expect a light touch of rain, averaging 7 mm (0.3 in) spread over just 1 day, while the average humidity remains comfortable at 67%.

August Temperature in Cottage Grove

In August in Cottage Grove, the average temperature is 21°C (69°F). The maximum can reach 41°C (106°F), while the minimum can drop as low as 7°C (44°F). Be prepared for a wide range of temperatures, and pack accordingly for your trip!

August Weather in Cottage Grove: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Cottage Grove, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cottage Grove, August typically has an average temperature of 21°C (69°F), with highs reaching up to 41°C (106°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec414044495562686963524540
Data source: Temperature data for Cottage Grove 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 Cottage Grove

In Cottage Grove in August, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

August Precipitation Trends in Cottage Grove

The chart displays monthly precipitation patterns in Cottage Grove, 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 Cottage Grove, August typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec16220915615272512788102144177
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Cottage Grove

In Cottage Grove in August, humidity is 67%. With an average temperature of 21°C (69°F), this humidity feels like a warm, enveloping embrace, making travel enjoyable yet slightly sticky. It encourages you to seek shade and sip cool drinks while exploring, adding a tropical flair to your adventures.

August Average Humidity in Cottage Grove

This chart illustrates the average monthly humidity levels in Cottage Grove, 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 Cottage Grove is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%86%83%83%83%78%67%66%77%87%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Cottage Grove

In Cottage Grove in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Cottage Grove.

Maximum UV Index Levels in Cottage Grove for August

The chart shows the monthly maximum UV Index (UVI) for Cottage Grove 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 Cottage Grove typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246710101098532
Data source: Cottage Grove 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 Cottage Grove Compares to Other Months

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

This table compares monthly weather conditions in Cottage Grove, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)162 mm (6.4 inches)84%low
February Weather5°C (40°F)209 mm (8.2 inches)85%moderate
March Weather7°C (44°F)156 mm (6.1 inches)86%high
April Weather10°C (49°F)152 mm (6.0 inches)83%high
May Weather13°C (56°F)72 mm (2.8 inches)83%very high
June Weather17°C (62°F)51 mm (2.0 inches)83%very high
July Weather20°C (69°F)2 mm (0.1 inches)78%very high
August Weather21°C (69°F)7 mm (0.3 inches)67%very high
September Weather17°C (63°F)88 mm (3.4 inches)66%very high
October Weather11°C (52°F)102 mm (4.0 inches)77%moderate
November Weather7°C (45°F)144 mm (5.7 inches)87%moderate
December Weather5°C (40°F)177 mm (7.0 inches)87%low

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