S
M
T
W
T
F
S
30
50°
38°
31
50°
39°
1
46°
39°
2
44°
38°
3
45°
34°
4
47°
33°
5
46°
28°
6
47°
38°
7
46°
33°
8
46°
33°
9
45°
36°
10
44°
34°
11
43°
31°
12
42°
31°
13
41°
30°
14
42°
35°
15
43°
33°
16
41°
29°
17
38°
31°
18
39°
29°
19
41°
31°
20
Hist. Avg.
37°
29°
21
Hist. Avg.
36°
29°
22
Hist. Avg.
36°
28°
23
Hist. Avg.
36°
28°
24
Hist. Avg.
35°
28°
25
Hist. Avg.
34°
27°
26
Hist. Avg.
34°
26°
27
Hist. Avg.
34°
26°
28
Hist. Avg.
33°
26°
29
Hist. Avg.
32°
25°
30
Hist. Avg.
32°
24°
1
Hist. Avg.
32°
24°
2
Hist. Avg.
31°
24°
3
Hist. Avg.
31°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Wainwright
Wainwright's September 2026 forecast shows daily high temperatures ranging from 38° to 50°, with overnight lows between 28° and 39°. The average high for September is 44° with an average low of 33°. 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.