S
M
T
W
T
F
S
30
88°
61°
31
83°
63°
1
86°
56°
2
82°
53°
3
78°
59°
4
85°
62°
5
85°
61°
6
86°
59°
7
85°
60°
8
82°
59°
9
79°
56°
10
81°
51°
11
75°
52°
12
76°
54°
13
77°
58°
14
80°
58°
15
78°
57°
16
80°
58°
17
79°
48°
18
79°
46°
19
72°
47°
20
70°
49°
21
72°
54°
22
77°
56°
23
79°
57°
24
78°
54°
25
79°
45°
26
77°
46°
27
69°
44°
28
68°
43°
29
68°
44°
30
68°
53°
1
78°
52°
2
Hist. Avg.
72°
48°
3
Hist. Avg.
72°
48°
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 68° to 88°, with overnight lows between 43° and 63°. The average high for September is 78° with an average low of 54°. 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.