S
M
T
W
T
F
S
30
73°
58°
31
62°
47°
1
68°
50°
2
70°
53°
3
69°
54°
4
71°
53°
5
70°
53°
6
74°
57°
7
72°
59°
8
73°
57°
9
75°
59°
10
74°
56°
11
73°
58°
12
65°
51°
13
73°
52°
14
72°
55°
15
66°
50°
16
63°
51°
17
69°
49°
18
71°
49°
19
71°
52°
20
71°
53°
21
71°
51°
22
66°
52°
23
65°
49°
24
61°
51°
25
67°
46°
26
71°
47°
27
71°
49°
28
64°
51°
29
55°
46°
30
54°
47°
1
64°
50°
2
63°
52°
3
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Summerhaven
Summerhaven's September 2026 forecast shows daily high temperatures ranging from 54° to 67°, with overnight lows between 46° and 52°. The average high for September is 61° with an average low of 49°. 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 Summerhaven. See also: October | November | December.
