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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Quincy, IL
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September
Average Temperature
High
26°
Feels 27
Low
15°
Feels 15
Average Precipitation
8 Days
Rain amount
80.8mm
Snow amount
0cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
36°
5
35°
6
32°
7
31°
8
35°
9
35°
10
30°
11
30°
12
30°
13
29°
14
29°
15
29°
16
30°
17
30°
18
30°
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Friday, September 4, 2026
Day
36°
Feels 38
Wind
15 km/h W
Gust
22 km/h
Humidity
34%
P.O.P
0%
Night
24°
Feels 24
Wind
8 km/h S
Gust
11 km/h
Humidity
79%
P.O.P
0%
Historical Averages
Sep 4
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.