S
M
T
W
T
F
S
30
84°
58°
31
80°
69°
1
89°
70°
2
76°
68°
3
86°
68°
4
85°
68°
5
80°
63°
6
77°
58°
7
77°
56°
8
81°
62°
9
86°
67°
10
79°
62°
11
78°
55°
12
80°
63°
13
81°
65°
14
84°
67°
15
81°
66°
16
78°
58°
17
78°
60°
18
77°
61°
19
77°
60°
20
76°
56°
21
78°
61°
22
73°
60°
23
72°
60°
24
72°
59°
25
73°
59°
26
77°
58°
27
75°
56°
28
75°
59°
29
77°
59°
30
77°
58°
1
76°
58°
2
75°
58°
3
75°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Intercourse
Intercourse's September 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 55° and 67°. The average high for September is 77° 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 Intercourse. See also: October | November | December.
