S
M
T
W
T
F
S
30
81°
60°
31
82°
59°
1
77°
55°
2
71°
49°
3
74°
58°
4
82°
59°
5
82°
59°
6
81°
58°
7
79°
58°
8
79°
57°
9
75°
56°
10
78°
57°
11
72°
47°
12
78°
50°
13
75°
48°
14
78°
50°
15
73°
42°
16
66°
41°
17
64°
41°
18
65°
40°
19
64°
47°
20
66°
51°
21
71°
54°
22
75°
54°
23
76°
53°
24
77°
52°
25
76°
50°
26
75°
40°
27
67°
46°
28
63°
46°
29
71°
50°
30
67°
40°
1
72°
35°
2
58°
32°
3
54°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gardner
Gardner's September 2026 forecast shows daily high temperatures ranging from 54° to 82°, with overnight lows between 32° and 60°. The average high for September is 73° 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 Gardner. See also: October | November | December.