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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Downtown, Bellevue, WA
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September
Average Temperature
High
21°
Feels 21
Low
12°
Feels 12
Average Precipitation
9 Days
Rain amount
45.9mm
Snow amount
0cm
Content continues below
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
16°
14
19°
15
17°
16
23°
17
23°
18
24°
19
20°
20
22°
21
22°
22
20°
23
19°
24
19°
25
19°
26
18°
27
18°
28
29
30
Forecast
Sunday, September 13, 2026
Day
16°
Feels 15
Wind
14 km/h S
Gust
21 km/h
Humidity
82%
P.O.P
100%
Rain
~15 mm
Night
13°
Feels 12
Wind
13 km/h S
Gust
20 km/h
Humidity
94%
P.O.P
40%
Rain
<1 mm
Historical Averages
Sep 13
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.