S
M
T
W
T
F
S
30
66°
57°
31
64°
54°
1
68°
52°
2
66°
57°
3
70°
59°
4
64°
57°
5
64°
55°
6
73°
55°
7
66°
57°
8
63°
53°
9
64°
48°
10
65°
55°
11
65°
45°
12
66°
59°
13
68°
56°
14
72°
57°
15
65°
53°
16
63°
53°
17
64°
51°
18
64°
53°
19
65°
52°
20
64°
53°
21
66°
55°
22
66°
54°
23
65°
54°
24
66°
52°
25
62°
49°
26
61°
48°
27
63°
47°
28
63°
48°
29
62°
52°
30
62°
50°
1
61°
49°
2
63°
50°
3
63°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Prescot
Prescot's September 2026 forecast shows daily high temperatures ranging from 61° to 72°, with overnight lows between 45° and 59°. The average high for September is 64° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Prescot. See also: October | November | December.