S
M
T
W
T
F
S
30
87°
62°
31
89°
64°
1
89°
65°
2
88°
66°
3
89°
64°
4
84°
61°
5
86°
62°
6
87°
65°
7
88°
61°
8
86°
64°
9
88°
62°
10
87°
63°
11
87°
63°
12
86°
64°
13
87°
61°
14
86°
58°
15
82°
58°
16
85°
59°
17
85°
61°
18
86°
59°
19
85°
61°
20
83°
62°
21
80°
60°
22
84°
61°
23
83°
60°
24
84°
57°
25
80°
53°
26
80°
58°
27
80°
52°
28
Hist. Avg.
80°
57°
29
Hist. Avg.
79°
57°
30
Hist. Avg.
79°
56°
1
Hist. Avg.
79°
56°
2
Hist. Avg.
78°
55°
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 Loop
Loop's September 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 52° and 66°. The average high for September is 85° with an average low of 61°. 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 Loop. See also: October | November | December.