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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Washington Island, WI
Content continues below
September
Average Temperature
High
18°
Feels 18
Low
14°
Feels 13
Average Precipitation
10 Days
Rain amount
74.6mm
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
14
15
16
17
20°
18
17°
19
18°
20
18°
21
15°
22
15°
23
16°
24
18°
25
18°
26
19°
27
17°
28
17°
29
17°
30
17°
Forecast
Thursday, September 17, 2026
Day
20°
Feels 20
Wind
16 km/h N
Gust
24 km/h
Humidity
60%
P.O.P
30%
Night
15°
Feels 13
Wind
25 km/h NE
Gust
38 km/h
Humidity
82%
P.O.P
20%
Historical Averages
Sep 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.