nomadseason

August Weather in La Grande, United States

Last updated: June 24, 2025

In La Grande, United States, the average temperature in August hovers around 19°C (67°F). Expect a minimum of 3°C (38°F) and a maximum reaching up to 37°C (100°F). During this time, precipitation averages 16 mm (0.6 in) over approximately 4 days, while the average humidity sits at a comfortable 60%.

August Temperature in La Grande

In August in La Grande, the average temperature is 19°C (67°F), with maximums reaching 37°C (100°F) and minimums dropping as low as 3°C (38°F). Pack accordingly to enjoy a comfortable stay, as the weather can vary significantly throughout the month.

August Weather in La Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in La Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Grande, August typically has an average temperature of 19°C (67°F), with highs reaching up to 37°C (100°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec272735415058686657443529
Data source: Temperature data for La Grande 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 La Grande

In La Grande in August, the precipitation amount is 16 mm (0.6 in) over a span of 4 days.

August Precipitation Trends in La Grande

The chart displays monthly precipitation patterns in La Grande, 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 La Grande, August typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec861308986774441635647996
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

August Humidity in La Grande

In La Grande in August humidity is 60%. With an average temperature of 19°C (67°F), this humidity feels like a gentle embrace, making for a comfortable and pleasant experience while traveling.

August Average Humidity in La Grande

This chart illustrates the average monthly humidity levels in La Grande, 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 La Grande is approximately 60%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%85%83%77%81%77%60%58%75%85%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in La Grande

In La Grande 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 La Grande.

Maximum UV Index Levels in La Grande for August

The chart shows the monthly maximum UV Index (UVI) for La Grande 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 La Grande typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357810101098542
Data source: La Grande 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 La Grande Compares to Other Months

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

This table compares monthly weather conditions in La Grande, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)86 mm (3.4 inches)86%moderate
February Weather-3°C (28°F)130 mm (5.1 inches)86%moderate
March Weather2°C (36°F)89 mm (3.5 inches)85%high
April Weather5°C (42°F)86 mm (3.4 inches)83%very high
May Weather10°C (50°F)77 mm (3.0 inches)77%very high
June Weather14°C (58°F)44 mm (1.7 inches)81%very high
July Weather20°C (68°F)3 mm (0.1 inches)76%very high
August Weather19°C (67°F)16 mm (0.6 inches)60%very high
September Weather14°C (57°F)35 mm (1.4 inches)58%very high
October Weather6°C (44°F)64 mm (2.5 inches)75%moderate
November Weather2°C (35°F)79 mm (3.1 inches)85%moderate
December Weather-2°C (29°F)96 mm (3.8 inches)87%low

Compare La Grande's Climate with Cities Worldwide