nomadseason

August Weather in Grand Ronde, United States

Last updated: June 24, 2025

In Grand Ronde, United States, the average temperature in August is a pleasant 19°C (66°F). However, be prepared for a range, as temperatures can dip to a minimum of 7°C (46°F) and spike up to a scorching 40°C (103°F). During this month, you can expect 6 mm (0.2 in) of precipitation spread across 1 day, and the average humidity sits at a comfortable 74%.

August Temperature in Grand Ronde

In August in Grand Ronde, the average temperature is 19°C (66°F). Maximums can reach 40°C (103°F), while minimums can dip as low as 7°C (46°F). Be prepared for a wide range of temperatures when traveling during this month.

August Weather in Grand Ronde: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Grand Ronde, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grand Ronde, August typically has an average temperature of 19°C (66°F), with highs reaching up to 40°C (103°F) and lows dropping to around 7°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec414044495560656661524541
Data source: Temperature data for Grand Ronde generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Grand Ronde

In Grand Ronde in August, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

August Precipitation Trends in Grand Ronde

The chart displays monthly precipitation patterns in Grand Ronde, 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 Grand Ronde, August typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec19418015012663495668105178210
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

August Humidity in Grand Ronde

In Grand Ronde in August humidity is 74%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it ideal for leisurely outdoor exploration but potentially heavy for those not accustomed to tropical conditions.

August Average Humidity in Grand Ronde

This chart illustrates the average monthly humidity levels in Grand Ronde, 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 Grand Ronde is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%85%83%83%84%82%74%71%81%87%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Grand Ronde

In Grand Ronde 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 Grand Ronde.

Maximum UV Index Levels in Grand Ronde for August

The chart shows the monthly maximum UV Index (UVI) for Grand Ronde 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 Grand Ronde typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec23579101097532
Data source: Grand Ronde 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 Grand Ronde Compares to Other Months

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

This table compares monthly weather conditions in Grand Ronde, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)194 mm (7.6 inches)85%low
February Weather5°C (41°F)180 mm (7.1 inches)84%moderate
March Weather7°C (45°F)150 mm (5.9 inches)85%moderate
April Weather9°C (49°F)126 mm (4.9 inches)83%high
May Weather13°C (55°F)63 mm (2.5 inches)83%very high
June Weather16°C (61°F)49 mm (1.9 inches)83%very high
July Weather18°C (65°F)5 mm (0.2 inches)82%very high
August Weather19°C (66°F)6 mm (0.2 inches)74%very high
September Weather16°C (61°F)68 mm (2.7 inches)71%high
October Weather11°C (52°F)105 mm (4.1 inches)81%moderate
November Weather7°C (46°F)178 mm (7.0 inches)87%moderate
December Weather5°C (41°F)210 mm (8.3 inches)87%low

Compare Grand Ronde's Climate with Cities Worldwide