S
M
T
W
T
F
S
30
74°
52°
31
76°
47°
1
76°
45°
2
70°
44°
3
69°
47°
4
73°
54°
5
74°
50°
6
76°
44°
7
70°
45°
8
68°
51°
9
70°
51°
10
72°
50°
11
73°
51°
12
68°
51°
13
69°
48°
14
66°
43°
15
64°
41°
16
64°
41°
17
65°
49°
18
67°
49°
19
69°
50°
20
73°
49°
21
70°
44°
22
68°
40°
23
61°
39°
24
62°
38°
25
62°
37°
26
62°
45°
27
68°
45°
28
67°
47°
29
Hist. Avg.
60°
47°
30
Hist. Avg.
59°
47°
1
Hist. Avg.
59°
47°
2
Hist. Avg.
59°
47°
3
Hist. Avg.
58°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Plainville
Plainville's September 2026 forecast shows daily high temperatures ranging from 61° to 76°, with overnight lows between 37° and 54°. The average high for September is 69° with an average low of 46°. 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 Plainville. See also: October | November | December.
