S
M
T
W
T
F
S
30
75°
53°
31
76°
57°
1
79°
56°
2
78°
57°
3
79°
55°
4
79°
56°
5
80°
56°
6
79°
55°
7
75°
52°
8
72°
50°
9
71°
50°
10
72°
49°
11
71°
51°
12
72°
54°
13
72°
54°
14
73°
52°
15
73°
50°
16
72°
49°
17
Hist. Avg.
66°
55°
18
Hist. Avg.
66°
55°
19
Hist. Avg.
66°
54°
20
Hist. Avg.
66°
54°
21
Hist. Avg.
66°
54°
22
Hist. Avg.
65°
53°
23
Hist. Avg.
65°
53°
24
Hist. Avg.
65°
52°
25
Hist. Avg.
65°
52°
26
Hist. Avg.
64°
52°
27
Hist. Avg.
64°
51°
28
Hist. Avg.
64°
51°
29
Hist. Avg.
63°
50°
30
Hist. Avg.
63°
50°
1
Hist. Avg.
63°
49°
2
Hist. Avg.
63°
49°
3
Hist. Avg.
62°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Summerhaven
Summerhaven's September 2026 forecast shows daily high temperatures ranging from 71° to 80°, with overnight lows between 49° and 57°. 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 Summerhaven. See also: October | November | December.
