S
M
T
W
T
F
S
30
89°
68°
31
89°
68°
1
88°
66°
2
88°
64°
3
87°
67°
4
88°
69°
5
89°
68°
6
89°
69°
7
Hist. Avg.
87°
66°
8
Hist. Avg.
86°
65°
9
Hist. Avg.
86°
65°
10
Hist. Avg.
86°
65°
11
Hist. Avg.
86°
64°
12
Hist. Avg.
85°
64°
13
Hist. Avg.
85°
64°
14
Hist. Avg.
85°
63°
15
Hist. Avg.
84°
63°
16
Hist. Avg.
84°
62°
17
Hist. Avg.
84°
62°
18
Hist. Avg.
84°
62°
19
Hist. Avg.
83°
61°
20
Hist. Avg.
83°
61°
21
Hist. Avg.
83°
60°
22
Hist. Avg.
82°
60°
23
Hist. Avg.
82°
60°
24
Hist. Avg.
82°
59°
25
Hist. Avg.
81°
59°
26
Hist. Avg.
81°
58°
27
Hist. Avg.
81°
58°
28
Hist. Avg.
80°
58°
29
Hist. Avg.
80°
57°
30
Hist. Avg.
80°
57°
1
Hist. Avg.
79°
56°
2
Hist. Avg.
79°
56°
3
Hist. Avg.
78°
55°
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 87° to 89°, with overnight lows between 64° and 69°. The average high for September is 88° with an average low of 67°. 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.
