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August Weather in Grants Pass, United States

Last updated: June 24, 2025

In Grants Pass, United States, the average temperature in August hovers around 22°C (71°F). Expect a range where the mercury can dip to a cool 7°C (45°F) or soar to a sizzling 42°C (107°F). With only 5 mm (0.2 in) of precipitation spread over 0 days, you might find yourself enjoying mostly dry weather. The average humidity is a comfortable 67%, making it a pleasant time to explore!

August Temperature in Grants Pass

In August in Grants Pass, the average temperature is 22°C (71°F). Maximum temperatures can reach up to 42°C (107°F), while minimum temperatures can drop as low as 7°C (45°F). Be sure to pack for both warm days and cool evenings during your travels!

August Weather in Grants Pass: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Grants Pass, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grants Pass, August typically has an average temperature of 22°C (71°F), with highs reaching up to 42°C (107°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec394044505764717164534438
Data source: Temperature data for Grants Pass 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 Grants Pass

In Grants Pass in August, the precipitation amount is 5 mm (0.2 in) during a span of 0 days.

August Precipitation Trends in Grants Pass

The chart displays monthly precipitation patterns in Grants Pass, 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 Grants Pass, August typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec13815110388481915364186116
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Grants Pass

In Grants Pass in August, humidity is 67%. With an average temperature of 22°C (71°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet slightly uncomfortable, as the air hangs thick, reminding travelers to stay hydrated and seek shade during the midday sun.

August Average Humidity in Grants Pass

This chart illustrates the average monthly humidity levels in Grants Pass, 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 Grants Pass 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 Grants Pass

In Grants Pass 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 Grants Pass.

Maximum UV Index Levels in Grants Pass for August

The chart shows the monthly maximum UV Index (UVI) for Grants Pass 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 Grants Pass typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468101110108642
Data source: Grants Pass 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 Grants Pass Compares to Other Months

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

This table compares monthly weather conditions in Grants Pass, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)138 mm (5.4 inches)84%moderate
February Weather4°C (40°F)151 mm (5.9 inches)85%moderate
March Weather7°C (44°F)103 mm (4.0 inches)86%high
April Weather10°C (50°F)88 mm (3.5 inches)83%very high
May Weather14°C (57°F)48 mm (1.9 inches)83%very high
June Weather18°C (65°F)19 mm (0.7 inches)83%extreme
July Weather22°C (71°F)1 mm (0.0 inches)78%very high
August Weather22°C (71°F)5 mm (0.2 inches)67%very high
September Weather18°C (64°F)36 mm (1.4 inches)66%very high
October Weather12°C (53°F)41 mm (1.6 inches)77%high
November Weather7°C (44°F)86 mm (3.4 inches)87%moderate
December Weather3°C (38°F)116 mm (4.6 inches)87%low

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