S
M
T
W
T
F
S
30
85°
52°
31
77°
56°
1
75°
57°
2
77°
60°
3
79°
59°
4
82°
59°
5
86°
50°
6
74°
56°
7
77°
47°
8
Hist. Avg.
80°
53°
9
Hist. Avg.
80°
53°
10
Hist. Avg.
79°
52°
11
Hist. Avg.
79°
52°
12
Hist. Avg.
79°
52°
13
Hist. Avg.
78°
51°
14
Hist. Avg.
78°
51°
15
Hist. Avg.
78°
50°
16
Hist. Avg.
77°
50°
17
Hist. Avg.
77°
49°
18
Hist. Avg.
76°
49°
19
Hist. Avg.
76°
48°
20
Hist. Avg.
75°
48°
21
Hist. Avg.
75°
47°
22
Hist. Avg.
74°
47°
23
Hist. Avg.
74°
46°
24
Hist. Avg.
74°
46°
25
Hist. Avg.
73°
45°
26
Hist. Avg.
72°
45°
27
Hist. Avg.
72°
44°
28
Hist. Avg.
71°
44°
29
Hist. Avg.
71°
43°
30
Hist. Avg.
70°
43°
1
Hist. Avg.
70°
42°
2
Hist. Avg.
69°
42°
3
Hist. Avg.
69°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Plankinton
Plankinton's September 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 47° and 60°. The average high for September is 79° 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 Plankinton. See also: October | November | December.