S
M
T
W
T
F
S
30
84°
61°
31
83°
54°
1
80°
54°
2
76°
55°
3
76°
54°
4
77°
54°
5
76°
55°
6
75°
53°
7
75°
53°
8
76°
54°
9
75°
55°
10
73°
53°
11
75°
53°
12
76°
55°
13
74°
54°
14
76°
53°
15
73°
52°
16
73°
51°
17
71°
50°
18
72°
51°
19
72°
55°
20
74°
55°
21
75°
48°
22
70°
48°
23
Hist. Avg.
73°
51°
24
Hist. Avg.
72°
51°
25
Hist. Avg.
72°
50°
26
Hist. Avg.
71°
50°
27
Hist. Avg.
71°
49°
28
Hist. Avg.
71°
49°
29
Hist. Avg.
70°
48°
30
Hist. Avg.
70°
48°
1
Hist. Avg.
69°
48°
2
Hist. Avg.
69°
47°
3
Hist. Avg.
68°
47°
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 70° to 84°, with overnight lows between 48° and 61°. The average high for September is 75° with an average low of 53°. 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.
