Which is the hottest month in Walla Walla?

The hottest time of year in Walla Walla is normally July. Expect maximum daytime temperatures to reach 31°C with moderate heat and humidity.

Which month has the most rain in Walla Walla?

In terms of rainfall, November is usually the wettest month in Walla Walla with 67mm on average. There are normally 11 days in November with some rain.

When is it sunniest in Walla Walla?

The sunniest time of year in Walla Walla is normally July with bright sunshine on average for 82% of daylight hours; that's 13 hours of sunshine per day.

Best time to visit Walla Walla

Q: When is the best time to visit Walla Walla?

The best time to visit Walla Walla is June and September based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C.

Find the best time to visit Walla Walla and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Walla Walla by month

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

Recommended for Washington State

Avalon Waterways: Current offers on 2025 river cruises

Sale

Save on river cruises in 2025 with Avalon Waterways
Book river cruises in Europe, Asia, Africa & Americas
Filter deals by promotion, month, destination & more

Go to Avalon Waterways deal >>

Expires at 23:59 on Wednesday 31st Dec 2025 · View all Avalon Waterways offers

When is the best time to visit Walla Walla?

The best time to visit Walla Walla is June and September based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0
Feb
0
Mar
0
Apr
4
May
5
Jun
2.5
Jul
2.5
Aug
5
Sep
2
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°F)

41
Jan
46
Feb
54
Mar
61
Apr
70
May
79
Jun
88
Jul
88
Aug
77
Sep
64
Oct
50
Nov
41
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Washington State (Walla Walla) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C) | Imperial (°F)