Walla Walla weather in October 2025

Expect daytime maximum temperatures of 18°C in Walla Walla, Washington State in October based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 43 mm of rainfall in the month.

  • 18°C maximum daytime temperature in October in Walla Walla18
    18°C max day temperature
  • 6 hours of sunshine per day
  • 6 days with some rainfall in October in Walla Walla6
    6 days with some rainfall
  • 5°C minimum night-time temperature in October in Walla Walla5
    5°C min night temperature
  • 11 hours of daylight per day in October in Walla Walla11
    11 hours of daylight per day
  • No heat & humidity in October in Walla Walla0
    No heat & humidity
  • 43 mm monthly rainfall in October in Walla Walla43
    43 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Walla Walla3
    3 (Moderate) UV index

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