S
M
T
W
T
F
S
30
95°
76°
31
94°
76°
1
95°
75°
2
95°
76°
3
94°
74°
4
93°
74°
5
91°
75°
6
93°
74°
7
94°
75°
8
90°
74°
9
89°
72°
10
91°
74°
11
91°
73°
12
92°
75°
13
92°
74°
14
93°
75°
15
Hist. Avg.
90°
70°
16
Hist. Avg.
90°
70°
17
Hist. Avg.
89°
69°
18
Hist. Avg.
89°
69°
19
Hist. Avg.
89°
69°
20
Hist. Avg.
89°
68°
21
Hist. Avg.
88°
68°
22
Hist. Avg.
88°
68°
23
Hist. Avg.
88°
68°
24
Hist. Avg.
88°
67°
25
Hist. Avg.
87°
67°
26
Hist. Avg.
87°
67°
27
Hist. Avg.
87°
66°
28
Hist. Avg.
86°
66°
29
Hist. Avg.
86°
66°
30
Hist. Avg.
86°
66°
1
Hist. Avg.
86°
65°
2
Hist. Avg.
85°
65°
3
Hist. Avg.
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Downtown
Downtown's September 2026 forecast shows daily high temperatures ranging from 89° to 95°, with overnight lows between 72° and 76°. The average high for September is 93° 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 Downtown. See also: October | November | December.
