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
Rainfall
Sunshine & daylight
UV levels & humidity

Temperature in Walla Walla (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	5	8	12	16	21	26	31	31	25	18	10	5
Min temperature (night-time)	-2	0	2	4	8	12	15	15	10	5	1	-2
Heat & Humidity	0	0	0	0	0	L	M	M	0	0	0	0

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	2	3	6	7	9	11	13	11	9	6	2	2
Daily hours of daylight	9	10	12	14	15	16	15	14	12	11	9	9
UV Index (Maximum)	1	2	3	5	6	8	8	7	5	3	1	1

Rainfall in Walla Walla

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	12	10	10	9	8	6	3	4	5	6	11	12
Average monthly rainfall (mm)	64	48	53	43	45	31	15	20	24	43	67	66

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.

Walla Walla weather in January

Expect daytime maximum temperatures of 5°C in Walla Walla, Washington State in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 12 days with some rainfall and typically 64 mm of rainfall in the month.

5
5°C max day temperature
2
2 hours of sunshine per day
12
12 days with some rainfall
-2
-2°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
64
64 mm of monthly rainfall
1
1 (Low) UV index

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Walla Walla weather in February

Expect daytime maximum temperatures of 8°C in Walla Walla, Washington State in February based on long-term weather averages. There are 3 hours of sunshine per day on average with 10 days with some rainfall and typically 48 mm of rainfall in the month.

8
8°C max day temperature
3
3 hours of sunshine per day
10
10 days with some rainfall
0
0°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
48
48 mm of monthly rainfall
2
2 (Low) UV index

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Walla Walla weather in March

Expect daytime maximum temperatures of 12°C in Walla Walla, Washington State in March based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 53 mm of rainfall in the month.

12
12°C max day temperature
6
6 hours of sunshine per day
10
10 days with some rainfall
2
2°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
53
53 mm of monthly rainfall
3
3 (Moderate) UV index

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Walla Walla weather in April

Expect daytime maximum temperatures of 16°C in Walla Walla, Washington State in April based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 43 mm of rainfall in the month.

16
16°C max day temperature
7
7 hours of sunshine per day
9
9 days with some rainfall
4
4°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
43
43 mm of monthly rainfall
5
5 (Moderate) UV index

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Walla Walla weather in May

Expect daytime maximum temperatures of 21°C in Walla Walla, Washington State in May based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 45 mm of rainfall in the month.

21
21°C max day temperature
9
9 hours of sunshine per day
8
8 days with some rainfall
8
8°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
45
45 mm of monthly rainfall
6
6 (High) UV index

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Walla Walla weather in June

Expect daytime maximum temperatures of 26°C in Walla Walla, Washington State in June based on long-term weather averages. There are 11 hours of sunshine per day on average.

26
26°C max day temperature
11
11 hours of sunshine per day
6
6 days with some rainfall
12
12°C min night temperature
16
16 hours of daylight per day
L
Low heat & humidity
31
31 mm of monthly rainfall
8
8 (Very High) UV index

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Walla Walla weather in July

Expect daytime maximum temperatures of 31°C in Walla Walla, Washington State in July based on long-term weather averages. There are 13 hours of sunshine per day on average.

31
31°C max day temperature
13
13 hours of sunshine per day
3
3 days with some rainfall
15
15°C min night temperature
15
15 hours of daylight per day
M
Moderate heat & humidity
15
15 mm of monthly rainfall
8
8 (Very High) UV index

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Walla Walla weather in August

Expect daytime maximum temperatures of 31°C in Walla Walla, Washington State in August based on long-term weather averages. There are 11 hours of sunshine per day on average.

31
31°C max day temperature
11
11 hours of sunshine per day
4
4 days with some rainfall
15
15°C min night temperature
14
14 hours of daylight per day
M
Moderate heat & humidity
20
20 mm of monthly rainfall
7
7 (High) UV index

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Walla Walla weather in September

Expect daytime maximum temperatures of 25°C in Walla Walla, Washington State in September based on long-term weather averages. There are 9 hours of sunshine per day on average.

25
25°C max day temperature
9
9 hours of sunshine per day
5
5 days with some rainfall
10
10°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
24
24 mm of monthly rainfall
5
5 (Moderate) UV index

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Walla Walla weather in October

Expect daytime maximum temperatures of 18°C in Walla Walla, Washington State in October based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 43 mm of rainfall in the month.

18
18°C max day temperature
6
6 hours of sunshine per day
6
6 days with some rainfall
5
5°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
43
43 mm of monthly rainfall
3
3 (Moderate) UV index

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Walla Walla weather in November

Expect daytime maximum temperatures of 10°C in Walla Walla, Washington State in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 11 days with some rainfall and typically 67 mm of rainfall in the month.

10
10°C max day temperature
2
2 hours of sunshine per day
11
11 days with some rainfall
1
1°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
67
67 mm of monthly rainfall
1
1 (Low) UV index

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Walla Walla weather in December

Expect daytime maximum temperatures of 5°C in Walla Walla, Washington State in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 12 days with some rainfall and typically 66 mm of rainfall in the month.

5
5°C max day temperature
2
2 hours of sunshine per day
12
12 days with some rainfall
-2
-2°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
66
66 mm of monthly rainfall
1
1 (Low) UV index

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