S
M
T
W
T
F
S
30
107°
78°
31
105°
72°
1
103°
70°
2
104°
75°
3
103°
79°
4
101°
73°
5
102°
76°
6
101°
76°
7
102°
78°
8
103°
77°
9
101°
69°
10
92°
70°
11
95°
71°
12
98°
68°
13
90°
64°
14
83°
61°
15
80°
60°
16
89°
64°
17
86°
62°
18
87°
63°
19
81°
56°
20
78°
61°
21
86°
62°
22
86°
63°
23
85°
62°
24
82°
61°
25
73°
61°
26
79°
60°
27
79°
60°
28
80°
59°
29
75°
59°
30
81°
49°
1
68°
46°
2
69°
45°
3
68°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Haven
Haven's September 2026 forecast shows daily high temperatures ranging from 68° to 103°, with overnight lows between 45° and 78°. The average high for September is 85° with an average low of 62°. 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 Haven. See also: October | November | December.
