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August Weather in The Dalles, United States

Last updated: June 24, 2025

In August, the average temperature in The Dalles, United States hovers around 22°C (72°F). However, prepare for a range of weather, as temperatures can dip to a chilly 5°C (42°F) or soar to a scorching 40°C (104°F). Expect light rain with an average precipitation of 4 mm (0.2 in) spread over just 1 day, while the air maintains an average humidity level of 62%.

August Temperature in The Dalles

In August in The Dalles, the average temperature is 22°C (72°F), with maximums reaching up to 40°C (104°F) and minimums dropping as low as 5°C (42°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort during their stay.

August Weather in The Dalles: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in The Dalles, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In The Dalles, August typically has an average temperature of 22°C (72°F), with highs reaching up to 40°C (104°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec343541485664717163504135
Data source: Temperature data for The Dalles 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 The Dalles

In The Dalles in August, the precipitation amount is 4 mm (0.2 in) during 1 day.

August Precipitation Trends in The Dalles

The chart displays monthly precipitation patterns in The Dalles, 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 The Dalles, August typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec1121237569312224345893118
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in The Dalles

In The Dalles in August, humidity is 62%. With an average temperature of 22°C (72°F), this humidity feels like a warm, enveloping embrace that adds a slight stickiness to the skin, making outdoor activities refreshing yet requiring occasional breaks to hydrate and stay cool while exploring.

August Average Humidity in The Dalles

This chart illustrates the average monthly humidity levels in The Dalles, 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 The Dalles is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%86%85%80%82%79%63%59%78%88%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in The Dalles

In The Dalles 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 The Dalles.

Maximum UV Index Levels in The Dalles for August

The chart shows the monthly maximum UV Index (UVI) for The Dalles 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 The Dalles typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101098532
Data source: The Dalles 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 The Dalles Compares to Other Months

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

This table compares monthly weather conditions in The Dalles, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)112 mm (4.4 inches)86%low
February Weather2°C (35°F)123 mm (4.8 inches)87%moderate
March Weather5°C (41°F)75 mm (3.0 inches)86%high
April Weather9°C (48°F)69 mm (2.7 inches)85%high
May Weather14°C (57°F)31 mm (1.2 inches)80%very high
June Weather18°C (64°F)22 mm (0.9 inches)82%very high
July Weather22°C (71°F)2 mm (0.1 inches)78%very high
August Weather22°C (72°F)4 mm (0.2 inches)62%very high
September Weather17°C (63°F)34 mm (1.4 inches)59%very high
October Weather10°C (50°F)58 mm (2.3 inches)78%moderate
November Weather5°C (41°F)93 mm (3.6 inches)88%moderate
December Weather1°C (35°F)118 mm (4.6 inches)88%low

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