Monthly Historical AveragesMarkham, IL
Average Temperature
High
21°
Feels 21
Low
11°
Feels 10
Average Precipitation
12 Days
79.9mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, May 17, 2026
Day
29°Feels 30
Wind
33 km/h S
Gust
50 km/h
Humidity
48%
P.O.P
30%
Night
22°Feels 22
Wind
30 km/h S
Gust
45 km/h
Humidity
65%
P.O.P
20%
Historical AveragesMay 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity