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August Weather in Grangeville, United States

Last updated: June 24, 2025

In August, the average temperature in Grangeville, United States hovers around 21°C (70°F), making it a pleasant time to visit. However, be prepared for a range, as temperatures can dip as low as 5°C (41°F) and soar up to 40°C (104°F). During this month, expect approximately 30 mm (1.2 in) of rain over about 3 days, with an average humidity level of 63% adding a touch of tropical feel to your experience.

August Temperature in Grangeville

In August in Grangeville, the average temperature is 21°C (70°F), with maximums reaching 40°C (104°F) and minimums dropping as low as 5°C (41°F). This varied climate makes it essential for travelers to pack accordingly, ensuring comfort in both warm and cool conditions.

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

The chart illustrates August temperature patterns in Grangeville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grangeville, August typically has an average temperature of 21°C (70°F), with highs reaching up to 40°C (104°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec313038445361717060463831
Data source: Temperature data for Grangeville 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 Grangeville

In Grangeville in August, the precipitation amount is 30 mm (1.2 in) over the course of 3 days.

August Precipitation Trends in Grangeville

The chart displays monthly precipitation patterns in Grangeville, 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 Grangeville, August typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec6513390106938373045798286
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Grangeville

In Grangeville in August, humidity is 63%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making it perfect for leisurely exploration but slightly sticky for prolonged outdoor activities.

August Average Humidity in Grangeville

This chart illustrates the average monthly humidity levels in Grangeville, 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 Grangeville is approximately 63%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%91%88%84%77%78%78%63%60%77%86%90%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Grangeville

In Grangeville 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 Grangeville.

Maximum UV Index Levels in Grangeville for August

The chart shows the monthly maximum UV Index (UVI) for Grangeville 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 Grangeville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34789101098532
Data source: Grangeville 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 Grangeville Compares to Other Months

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

This table compares monthly weather conditions in Grangeville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)65 mm (2.6 inches)90%moderate
February Weather-1°C (31°F)133 mm (5.2 inches)91%moderate
March Weather3°C (38°F)90 mm (3.5 inches)88%high
April Weather7°C (45°F)106 mm (4.2 inches)84%very high
May Weather12°C (53°F)93 mm (3.6 inches)77%very high
June Weather16°C (61°F)83 mm (3.3 inches)78%very high
July Weather22°C (71°F)7 mm (0.3 inches)77%very high
August Weather21°C (70°F)30 mm (1.2 inches)63%very high
September Weather15°C (60°F)45 mm (1.8 inches)60%very high
October Weather8°C (46°F)79 mm (3.1 inches)77%moderate
November Weather3°C (38°F)82 mm (3.2 inches)86%moderate
December Weather0°C (32°F)86 mm (3.4 inches)89%low

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