Monthly Historical AveragesMcHenry, IL
Average Temperature
High
14°
Feels 13
Low
3°
Feels 1
Average Precipitation
10 Days
68.5mm
1.9cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastThursday, April 2, 2026
Day
18°Feels 18
Wind
44 km/h SE
Gust
66 km/h
Humidity
83%
P.O.P
100%
Rain
10-15 mm
Night
7°Feels 3
Wind
39 km/h W
Gust
59 km/h
Humidity
93%
P.O.P
90%
Rain
~5 mm
Historical AveragesApr 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity