S
M
T
W
T
F
S
30
82°
59°
31
82°
61°
1
86°
60°
2
85°
58°
3
80°
59°
4
85°
60°
5
83°
59°
6
79°
59°
7
80°
58°
8
78°
54°
9
81°
51°
10
77°
56°
11
80°
58°
12
84°
57°
13
82°
58°
14
81°
56°
15
83°
57°
16
74°
53°
17
75°
56°
18
Hist. Avg.
80°
55°
19
Hist. Avg.
79°
55°
20
Hist. Avg.
79°
55°
21
Hist. Avg.
79°
54°
22
Hist. Avg.
78°
54°
23
Hist. Avg.
78°
53°
24
Hist. Avg.
78°
53°
25
Hist. Avg.
77°
53°
26
Hist. Avg.
77°
52°
27
Hist. Avg.
76°
52°
28
Hist. Avg.
76°
51°
29
Hist. Avg.
76°
51°
30
Hist. Avg.
75°
50°
1
Hist. Avg.
75°
50°
2
Hist. Avg.
74°
50°
3
Hist. Avg.
74°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Garrison
Garrison's September 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 51° and 61°. The average high for September is 81° with an average low of 57°. 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 Garrison. See also: October | November | December.
