Walla Walla weather in August 2025

Expect 88°F daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Walla Walla in August. Check more long-term weather averages for Walla Walla in August before you book your next holiday to Washington State in 2025/2026.

  • 88°F maximum daytime temperature in August in Walla Walla88
    88°F max day temperature
  • 11 hours of sunshine per day
  • 4 days with some rainfall in August in Walla Walla4
    4 days with some rainfall
  • 59°F minimum night-time temperature in August in Walla Walla59
    59°F min night temperature
  • 14 hours of daylight per day in August in Walla Walla14
    14 hours of daylight per day
  • Moderate heat & humidity in August in Walla WallaM
    Moderate heat & humidity
  • 0.8 inches monthly rainfall in August in Walla Walla0.8
    0.8 inches of monthly rainfall
  • UV (maximum) index 7 (High) in August in Walla Walla7
    7 (High) UV index

More about Walla Walla

Walla Walla by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Washington State

KLM: Low fares on long haul from £332 return

  • Save on return flights to worldwide destinations
  • Book flights to Abu Dhabi, Jo'burg, Tokyo & more
  • Plus more flights to the Americas, Middle East & Europe
Go to KLM deal >>

View all KLM offers

The August weather guide for Washington State (Walla Walla) 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)  |  Imperial (°F)

Back to top

More about the USA

How hot is it in Walla Walla in August?

Daytime temperatures usually reach 88°F in Walla Walla in August with moderate heat and humidity, falling to 59°F at night.

How sunny is it in Walla Walla in August?

There are normally 11 hours of bright sunshine each day in Walla Walla in August - that's 79% of daylight hours.

Does it rain in Walla Walla in August?

There are usually 4 days with some rain in Walla Walla in August and the average monthly rainfall is 0.8 inches.

Walla Walla August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:36 19:22
Saturday, 16th August 2025 04:54 19:00
Sunday, 31st August 2025 05:13 18:33

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^