S
M
T
W
T
F
S
30
75°
65°
31
84°
63°
1
80°
58°
2
79°
51°
3
81°
60°
4
81°
58°
5
85°
61°
6
84°
63°
7
77°
67°
8
82°
54°
9
70°
49°
10
81°
58°
11
76°
50°
12
62°
44°
13
62°
45°
14
61°
46°
15
66°
50°
16
68°
49°
17
67°
48°
18
63°
44°
19
62°
45°
20
66°
44°
21
66°
50°
22
68°
51°
23
70°
50°
24
68°
49°
25
66°
48°
26
67°
49°
27
66°
49°
28
67°
48°
29
68°
47°
30
58°
46°
1
56°
43°
2
54°
39°
3
53°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Plummer
Plummer's September 2026 forecast shows daily high temperatures ranging from 53° to 82°, with overnight lows between 39° and 67°. The average high for September is 66° with an average low of 48°. 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 Plummer. See also: October | November | December.
