S
M
T
W
T
F
S
30
83°
53°
31
73°
52°
1
73°
51°
2
74°
58°
3
75°
58°
4
79°
51°
5
73°
50°
6
71°
57°
7
76°
58°
8
78°
57°
9
80°
58°
10
79°
57°
11
77°
56°
12
71°
55°
13
77°
56°
14
76°
56°
15
Hist. Avg.
70°
51°
16
Hist. Avg.
70°
50°
17
Hist. Avg.
69°
50°
18
Hist. Avg.
69°
50°
19
Hist. Avg.
68°
49°
20
Hist. Avg.
68°
49°
21
Hist. Avg.
68°
48°
22
Hist. Avg.
67°
48°
23
Hist. Avg.
67°
48°
24
Hist. Avg.
66°
47°
25
Hist. Avg.
66°
47°
26
Hist. Avg.
65°
47°
27
Hist. Avg.
65°
46°
28
Hist. Avg.
64°
46°
29
Hist. Avg.
64°
46°
30
Hist. Avg.
64°
45°
1
Hist. Avg.
63°
45°
2
Hist. Avg.
63°
45°
3
Hist. Avg.
62°
44°
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 71° to 83°, with overnight lows between 50° and 58°. The average high for September is 76° with an average low of 55°. 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.
