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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Walla Walla Regional Airport, WA
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September
Average Temperature
High
25°
Feels 25
Low
11°
Feels 11
Average Precipitation
5 Days
Rain amount
13.6mm
Snow amount
0cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
20°
4
21°
5
21°
6
23°
7
23°
8
26°
9
28°
10
29°
11
26°
12
24°
13
24°
14
24°
15
25°
16
25°
17
25°
18
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Thursday, September 3, 2026
Day
20°
Feels 20
Wind
18 km/h NE
Gust
27 km/h
Humidity
40%
P.O.P
30%
Night
10°
Feels 9
Wind
11 km/h E
Gust
17 km/h
Humidity
87%
P.O.P
70%
Rain
1-3 mm
Historical Averages
Sep 3
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.