S
M
T
W
T
F
S
30
83°
53°
31
77°
52°
1
75°
52°
2
76°
58°
3
76°
52°
4
78°
59°
5
78°
59°
6
81°
54°
7
79°
51°
8
73°
51°
9
74°
50°
10
73°
56°
11
75°
50°
12
78°
50°
13
72°
49°
14
71°
55°
15
75°
56°
16
77°
47°
17
79°
46°
18
69°
45°
19
68°
46°
20
68°
46°
21
69°
47°
22
66°
46°
23
65°
49°
24
68°
50°
25
69°
49°
26
73°
51°
27
72°
47°
28
73°
42°
29
65°
42°
30
63°
47°
1
64°
48°
2
69°
49°
3
70°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Putnam
Putnam's September 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 42° and 59°. The average high for September is 73° with an average low of 50°. 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 Putnam. See also: October | November | December.