S
M
T
W
T
F
S
30
80°
64°
31
88°
58°
1
86°
52°
2
85°
61°
3
88°
62°
4
80°
64°
5
82°
63°
6
83°
60°
7
81°
63°
8
77°
55°
9
74°
48°
10
77°
55°
11
80°
50°
12
74°
51°
13
66°
53°
14
66°
49°
15
65°
47°
16
69°
51°
17
68°
52°
18
68°
48°
19
65°
48°
20
68°
47°
21
64°
52°
22
68°
52°
23
70°
53°
24
72°
52°
25
67°
51°
26
68°
51°
27
70°
52°
28
69°
52°
29
67°
51°
30
66°
49°
1
58°
44°
2
56°
40°
3
55°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Webster
Webster's September 2026 forecast shows daily high temperatures ranging from 55° to 81°, with overnight lows between 38° and 63°. The average high for September is 68° with an average low of 50°. 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 Webster. See also: October | November | December.
