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7 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Tumwater, WA
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September
Average Temperature
High
22°
Feels 22
Low
10°
Feels 9
Average Precipitation
8 Days
Rain amount
55.7mm
Snow amount
0cm
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Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22°
22
21°
23
19°
24
16°
25
17°
26
18°
27
18°
28
18°
29
18°
30
18°
Forecast
Monday, September 21, 2026
Day
22°
Feels 22
Wind
11 km/h SW
Gust
17 km/h
Humidity
53%
P.O.P
30%
Night
10°
Feels 10
Wind
11 km/h SW
Gust
17 km/h
Humidity
100%
P.O.P
40%
Historical Averages
Sep 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.