S
M
T
W
T
F
S
30
77°
64°
31
75°
59°
1
72°
59°
2
72°
55°
3
73°
55°
4
81°
61°
5
N/A
6
69°
46°
7
75°
55°
8
80°
58°
9
67°
49°
10
67°
46°
11
68°
51°
12
65°
51°
13
64°
47°
14
64°
47°
15
65°
47°
16
68°
49°
17
69°
48°
18
64°
45°
19
67°
52°
20
68°
51°
21
63°
52°
22
66°
52°
23
68°
51°
24
69°
52°
25
69°
50°
26
68°
46°
27
62°
43°
28
61°
43°
29
59°
44°
30
60°
49°
1
58°
47°
2
62°
43°
3
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Plessa
Plessa's September 2026 forecast shows daily high temperatures ranging from 58° to 80°, with overnight lows between 43° and 58°. 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 Plessa. See also: October | November | December.