La Grande weather in August 2025

Expect 26°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in La Grande in August. Check more long-term weather averages for La Grande in August before you book your next holiday to Oregon in 2025/2026.

  • 26°C maximum daytime temperature in August in La Grande26
    26°C max day temperature
  • 11 hours of sunshine per day
  • 5 days with some rainfall in August in La Grande5
    5 days with some rainfall
  • 8°C minimum night-time temperature in August in La Grande8
    8°C min night temperature
  • 14 hours of daylight per day in August in La Grande14
    14 hours of daylight per day
  • Moderate heat & humidity in August in La GrandeM
    Moderate heat & humidity
  • 23 mm monthly rainfall in August in La Grande23
    23 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in La Grande8
    8 (Very High) UV index

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The August weather guide for Oregon (La Grande) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in La Grande in August?

Daytime temperatures usually reach 26°C in La Grande in August with moderate heat and humidity, falling to 8°C at night.

How sunny is it in La Grande in August?

There are normally 11 hours of bright sunshine each day in La Grande in August - that's 80% of daylight hours.

Does it rain in La Grande in August?

There are usually 5 days with some rain in La Grande in August and the average monthly rainfall is 23mm.

La Grande August sunrise & sunset times

Browse the sunrise and sunset times for La Grande in August 2025. Select a month to view La Grande sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:37 19:19
Saturday, 16th August 2025 04:55 18:57
Sunday, 31st August 2025 05:13 18:31

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