Monthly Historical AveragesIsland Lake, IL
Average Temperature
High
14°
Feels 13
Low
3°
Feels 1
Average Precipitation
10 Days
72mm
1.3cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, April 12, 2026
Day
23°Feels 23
Wind
35 km/h SW
Gust
54 km/h
Humidity
57%
P.O.P
40%
Rain
<1 mm
Night
15°Feels 13
Wind
33 km/h SW
Gust
50 km/h
Humidity
94%
P.O.P
90%
Rain
~5 mm
Historical AveragesApr 12
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity