S
M
T
W
T
F
S
30
89°
72°
31
91°
70°
1
96°
72°
2
97°
72°
3
97°
73°
4
95°
73°
5
97°
72°
6
95°
70°
7
82°
70°
8
88°
64°
9
90°
64°
10
91°
70°
11
95°
72°
12
86°
72°
13
90°
72°
14
93°
68°
15
86°
73°
16
88°
68°
17
90°
63°
18
95°
68°
19
90°
70°
20
86°
70°
21
90°
70°
22
84°
70°
23
72°
61°
24
N/A
25
75°
49°
26
79°
50°
27
82°
53°
28
83°
54°
29
86°
59°
30
85°
63°
1
86°
64°
2
85°
66°
3
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Prosperity
Prosperity's September 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 49° and 66°. The average high for September is 83° with an average low of 58°. 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 Prosperity. See also: October | November | December.
