S
M
T
W
T
F
S
30
103°
76°
31
104°
79°
1
104°
74°
2
103°
74°
3
102°
73°
4
102°
77°
5
105°
75°
6
106°
72°
7
102°
71°
8
101°
77°
9
101°
79°
10
Hist. Avg.
104°
74°
11
Hist. Avg.
104°
74°
12
Hist. Avg.
104°
73°
13
Hist. Avg.
103°
73°
14
Hist. Avg.
103°
73°
15
Hist. Avg.
102°
72°
16
Hist. Avg.
102°
72°
17
Hist. Avg.
102°
72°
18
Hist. Avg.
101°
71°
19
Hist. Avg.
101°
71°
20
Hist. Avg.
100°
70°
21
Hist. Avg.
100°
70°
22
Hist. Avg.
100°
70°
23
Hist. Avg.
99°
69°
24
Hist. Avg.
99°
69°
25
Hist. Avg.
98°
68°
26
Hist. Avg.
98°
68°
27
Hist. Avg.
98°
68°
28
Hist. Avg.
97°
67°
29
Hist. Avg.
97°
67°
30
Hist. Avg.
96°
66°
1
Hist. Avg.
96°
66°
2
Hist. Avg.
96°
65°
3
Hist. Avg.
95°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Plaster City
Plaster City's September 2026 forecast shows daily high temperatures ranging from 101° to 106°, with overnight lows between 71° and 79°. The average high for September is 103° with an average low of 75°. 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 Plaster City. See also: October | November | December.