S
M
T
W
T
F
S
30
63°
52°
31
68°
53°
1
73°
52°
2
73°
51°
3
69°
50°
4
70°
50°
5
72°
51°
6
72°
49°
7
62°
49°
8
68°
48°
9
67°
50°
10
70°
49°
11
63°
46°
12
58°
42°
13
57°
36°
14
65°
46°
15
66°
46°
16
68°
47°
17
69°
46°
18
69°
46°
19
70°
45°
20
70°
44°
21
66°
42°
22
65°
45°
23
67°
45°
24
68°
42°
25
63°
42°
26
64°
43°
27
65°
43°
28
66°
42°
29
62°
38°
30
59°
38°
1
62°
31°
2
52°
27°
3
48°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Wainwright
Wainwright's September 2026 forecast shows daily high temperatures ranging from 48° to 73°, with overnight lows between 27° and 53°. The average high for September is 65° with an average low of 44°. 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 Wainwright. See also: October | November | December.