S
M
T
W
T
F
S
30
83°
62°
31
84°
63°
1
85°
63°
2
85°
60°
3
79°
60°
4
84°
62°
5
80°
61°
6
78°
60°
7
78°
61°
8
79°
57°
9
77°
52°
10
76°
54°
11
77°
61°
12
83°
60°
13
81°
61°
14
75°
59°
15
81°
59°
16
80°
60°
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 Downtown
Downtown's September 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 52° and 63°. The average high for September is 80° with an average low of 60°. 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.
