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 24°C.

Which month has the most rain in Walla Walla?

In terms of rainfall, December is usually the wettest month in Walla Walla with 151mm on average. There are normally 18 days in December 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 64% of daylight hours; that's 10 hours of sunshine per day.

Best time to visit Walla Walla

The best times to visit Walla Walla, Washington State are in June and September based on our default weather conditions. Update your weather preferences to see which months best match.

Walla Walla by month

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

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Destination

When is the best time to visit Walla Walla?

The best times to visit Walla Walla, Washington State are in June and September based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 8 hours or more [remove]

Change the criteria to reflect your weather preferences.

0.5
Jan
1
Feb
2
Mar
2.5
Apr
4.5
May
5
Jun
4
Jul
4
Aug
5
Sep
3
Oct
0.5
Nov
0.5
Dec

Change criteria

Max Day Temperature (°C)

5
Jan
8
Feb
12
Mar
16
Apr
21
May
26
Jun
31
Jul
31
Aug
25
Sep
18
Oct
10
Nov
5
Dec

Hours of Sunshine (daily)

2
Jan
3
Feb
6
Mar
7
Apr
9
May
11
Jun
13
Jul
11
Aug
9
Sep
6
Oct
2
Nov
2
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 / mm) | Imperial (°F / inches)