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7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Hillsboro, IL
Content continues below
May
Average Temperature
High
23°
Feels 24
Low
13°
Feels 12
Average Precipitation
12 Days
Rain amount
82.6mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
20°
14
20°
15
24°
16
26°
17
28°
18
27°
19
23°
20
19°
21
20°
22
20°
23
24°
24
24°
25
24°
26
23°
27
24°
28
29
30
31
Forecast
Wednesday, May 13, 2026
Day
20°
Feels 20
Wind
28 km/h NW
Gust
42 km/h
Humidity
40%
P.O.P
0%
Night
7°
Feels 7
Wind
23 km/h N
Gust
34 km/h
Humidity
85%
P.O.P
0%
Historical Averages
May 13
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.