Walla Walla weather by month

Check out Walla Walla weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Walla Walla (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
5°C maximum daytime temperature in January in Walla Walla5
8°C maximum daytime temperature in February in Walla Walla8
12°C maximum daytime temperature in March in Walla Walla12
16°C maximum daytime temperature in April in Walla Walla16
21°C maximum daytime temperature in May in Walla Walla21
26°C maximum daytime temperature in June in Walla Walla26
31°C maximum daytime temperature in July in Walla Walla31
31°C maximum daytime temperature in August in Walla Walla31
25°C maximum daytime temperature in September in Walla Walla25
18°C maximum daytime temperature in October in Walla Walla18
10°C maximum daytime temperature in November in Walla Walla10
5°C maximum daytime temperature in December in Walla Walla5
Min temperature (night-time)
-2°C minimum night-time temperature in January in Walla Walla-2
0°C minimum night-time temperature in February in Walla Walla0
2°C minimum night-time temperature in March in Walla Walla2
4°C minimum night-time temperature in April in Walla Walla4
8°C minimum night-time temperature in May in Walla Walla8
12°C minimum night-time temperature in June in Walla Walla12
15°C minimum night-time temperature in July in Walla Walla15
15°C minimum night-time temperature in August in Walla Walla15
10°C minimum night-time temperature in September in Walla Walla10
5°C minimum night-time temperature in October in Walla Walla5
1°C minimum night-time temperature in November in Walla Walla1
-2°C minimum night-time temperature in December in Walla Walla-2
Heat & Humidity
No heat & humidity in January in Walla Walla0
No heat & humidity in February in Walla Walla0
No heat & humidity in March in Walla Walla0
No heat & humidity in April in Walla Walla0
No heat & humidity in May in Walla Walla0
Low heat & humidity in June in Walla WallaL
Moderate heat & humidity in July in Walla WallaM
Moderate heat & humidity in August in Walla WallaM
No heat & humidity in September in Walla Walla0
No heat & humidity in October in Walla Walla0
No heat & humidity in November in Walla Walla0
No heat & humidity in December in Walla Walla0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Walla Walla

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Walla Walla9
10 hours of daylight per day in February in Walla Walla10
12 hours of daylight per day in March in Walla Walla12
14 hours of daylight per day in April in Walla Walla14
15 hours of daylight per day in May in Walla Walla15
16 hours of daylight per day in June in Walla Walla16
15 hours of daylight per day in July in Walla Walla15
14 hours of daylight per day in August in Walla Walla14
12 hours of daylight per day in September in Walla Walla12
11 hours of daylight per day in October in Walla Walla11
9 hours of daylight per day in November in Walla Walla9
9 hours of daylight per day in December in Walla Walla9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Walla Walla1
UV (maximum) index 2 (Low) in February in Walla Walla2
UV (maximum) index 3 (Moderate) in March in Walla Walla3
UV (maximum) index 5 (Moderate) in April in Walla Walla5
UV (maximum) index 6 (High) in May in Walla Walla6
UV (maximum) index 8 (Very High) in June in Walla Walla8
UV (maximum) index 8 (Very High) in July in Walla Walla8
UV (maximum) index 7 (High) in August in Walla Walla7
UV (maximum) index 5 (Moderate) in September in Walla Walla5
UV (maximum) index 3 (Moderate) in October in Walla Walla3
UV (maximum) index 1 (Low) in November in Walla Walla1
UV (maximum) index 1 (Low) in December in Walla Walla1

Rainfall in Walla Walla

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
12 days with some rainfall in January in Walla Walla12
10 days with some rainfall in February in Walla Walla10
10 days with some rainfall in March in Walla Walla10
9 days with some rainfall in April in Walla Walla9
8 days with some rainfall in May in Walla Walla8
6 days with some rainfall in June in Walla Walla6
3 days with some rainfall in July in Walla Walla3
4 days with some rainfall in August in Walla Walla4
5 days with some rainfall in September in Walla Walla5
6 days with some rainfall in October in Walla Walla6
11 days with some rainfall in November in Walla Walla11
12 days with some rainfall in December in Walla Walla12
Average monthly rainfall (mm)
64 mm monthly rainfall in January in Walla Walla64
48 mm monthly rainfall in February in Walla Walla48
53 mm monthly rainfall in March in Walla Walla53
43 mm monthly rainfall in April in Walla Walla43
45 mm monthly rainfall in May in Walla Walla45
31 mm monthly rainfall in June in Walla Walla31
15 mm monthly rainfall in July in Walla Walla15
20 mm monthly rainfall in August in Walla Walla20
24 mm monthly rainfall in September in Walla Walla24
43 mm monthly rainfall in October in Walla Walla43
67 mm monthly rainfall in November in Walla Walla67
66 mm monthly rainfall in December in Walla Walla66

More about Walla Walla

Walla Walla by month

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

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The climate guide for Washington State (Walla Walla) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Walla Walla?

Walla Walla has a cool semi arid climate with hot summers.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the USA

Compare Walla Walla with the USA

Below the Walla Walla chart shows average maximum daytime temperature for Walla Walla, Washington, USA and the USA (Washington).

Maximum daytime temperature (°C)

Walla Walla, Washington, USA
USA (Washington)
5
5
8
7
12
13
16
19
21
24
26
29
31
31
31
30
25
26
18
20
10
14
5
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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