S
M
T
W
T
F
S
30
75°
51°
31
73°
48°
1
72°
47°
2
72°
47°
3
73°
53°
4
72°
49°
5
73°
46°
6
72°
45°
7
71°
47°
8
72°
50°
9
74°
51°
10
75°
52°
11
75°
51°
12
68°
48°
13
68°
52°
14
70°
43°
15
67°
43°
16
Hist. Avg.
71°
46°
17
Hist. Avg.
70°
46°
18
Hist. Avg.
70°
45°
19
Hist. Avg.
70°
45°
20
Hist. Avg.
69°
44°
21
Hist. Avg.
69°
44°
22
Hist. Avg.
68°
44°
23
Hist. Avg.
68°
43°
24
Hist. Avg.
68°
43°
25
Hist. Avg.
67°
42°
26
Hist. Avg.
67°
42°
27
Hist. Avg.
66°
42°
28
Hist. Avg.
66°
41°
29
Hist. Avg.
65°
41°
30
Hist. Avg.
65°
41°
1
Hist. Avg.
64°
40°
2
Hist. Avg.
64°
40°
3
Hist. Avg.
64°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wallingford
Wallingford's September 2026 forecast shows daily high temperatures ranging from 67° to 75°, with overnight lows between 43° and 53°. The average high for September is 72° with an average low of 48°. 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 Wallingford. See also: October | November | December.
