S
M
T
W
T
F
S
30
83°
62°
31
84°
62°
1
84°
61°
2
83°
57°
3
79°
59°
4
83°
61°
5
77°
61°
6
78°
60°
7
76°
60°
8
76°
56°
9
75°
52°
10
74°
53°
11
75°
60°
12
82°
59°
13
80°
60°
14
74°
58°
15
79°
59°
16
79°
59°
17
Hist. Avg.
74°
56°
18
Hist. Avg.
74°
55°
19
Hist. Avg.
74°
55°
20
Hist. Avg.
73°
54°
21
Hist. Avg.
73°
54°
22
Hist. Avg.
73°
54°
23
Hist. Avg.
72°
54°
24
Hist. Avg.
72°
53°
25
Hist. Avg.
72°
53°
26
Hist. Avg.
71°
52°
27
Hist. Avg.
71°
52°
28
Hist. Avg.
70°
52°
29
Hist. Avg.
70°
51°
30
Hist. Avg.
70°
51°
1
Hist. Avg.
69°
50°
2
Hist. Avg.
69°
50°
3
Hist. Avg.
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Plum
Plum's September 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 52° and 62°. The average high for September is 79° with an average low of 59°. 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 Plum. See also: October | November | December.