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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Oswego, IL
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May
Average Temperature
High
22°
Feels 22
Low
10°
Feels 9
Average Precipitation
13 Days
Rain amount
89mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
18°
4
24°
5
12°
6
12°
7
13°
8
16°
9
17°
10
19°
11
17°
12
18°
13
19°
14
19°
15
19°
16
22°
17
21°
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Sunday, May 3, 2026
Day
18°
Feels 18
Wind
35 km/h SW
Gust
54 km/h
Humidity
49%
P.O.P
30%
Night
8°
Feels 6
Wind
23 km/h SW
Gust
35 km/h
Humidity
87%
P.O.P
20%
Historical Averages
May 3
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.