Mild
Average highs are around 25°C, so days are mild rather than hot.
September verdict
Walla Walla, Washington, United States in September
Weather score71Very good
Very good for holiday weather
Average highs are around 25°C, so days are mild rather than hot. Sunshine averages 8.8h per day, so bright days are a strong part of the month. Rainfall averages 20mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
25°C
Rain
20mm
Sun
8.8h
Weather score
71
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 20mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.8h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Walla Walla, Washington, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September25°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September20mm average rain
September sits on the drier side of Walla Walla's year, which helps with sightseeing and transfers.
Driest monthsFebruary and April to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September8.8 hours average sun
September sits close to Walla Walla's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September71 weather score
September sits close to Walla Walla's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
