Walla Walla Weather in September
September in Walla Walla averages 26°C (79°F) during the day and 12°C (54°F) at night. The perfect conditions and low rainfall make it a solid month to visit.
Rainfall in Walla Walla in September
Historically, the month has about 5 days of rain, averaging 15 mm (0.6 in) in total. The occasional light shower is possible, but rain is rarely an issue this month.
Temperature in Walla Walla in September
September is one of the better months to visit Walla Walla. Expect 26°C (79°F) during the day and 12°C (54°F) at night. The month of September belongs to the summer season. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June and September typically offer the best weather for Walla Walla.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Walla Walla's climate page.
Walla Walla Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
26°C (79°F)
Chance of Rain
16%
Precipitation
15 mm (0.6 in)
Rainy days
5 days
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Walla Walla in September
Warm but pleasant conditions in Walla Walla in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection.What To Do in Walla Walla in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Walla Walla's climate page.
See the full Walla Walla climate overview or explore weather in the United States of America.
