S
M
T
W
T
F
S
30
50°
27°
31
51°
39°
1
44°
35°
2
42°
28°
3
41°
33°
4
36°
31°
5
37°
31°
6
39°
32°
7
39°
32°
8
43°
29°
9
46°
36°
10
56°
40°
11
58°
45°
12
54°
36°
13
42°
33°
14
42°
32°
15
40°
31°
16
39°
33°
17
41°
32°
18
42°
31°
19
38°
30°
20
40°
28°
21
39°
30°
22
38°
30°
23
39°
31°
24
40°
31°
25
39°
30°
26
34°
27°
27
36°
32°
28
40°
32°
29
37°
32°
30
37°
31°
1
35°
31°
2
37°
29°
3
35°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Deadhorse
Deadhorse's September 2026 forecast shows daily high temperatures ranging from 34° to 54°, with overnight lows between 25° and 36°. The average high for September is 39° with an average low of 31°. 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 Deadhorse. See also: October | November | December.