S
M
T
W
T
F
S
30
76°
39°
31
77°
40°
1
76°
37°
2
75°
36°
3
72°
40°
4
75°
37°
5
76°
37°
6
77°
38°
7
72°
34°
8
73°
39°
9
73°
39°
10
76°
31°
11
73°
36°
12
76°
38°
13
73°
37°
14
68°
36°
15
69°
33°
16
Hist. Avg.
70°
34°
17
Hist. Avg.
70°
34°
18
Hist. Avg.
70°
33°
19
Hist. Avg.
69°
33°
20
Hist. Avg.
69°
33°
21
Hist. Avg.
69°
32°
22
Hist. Avg.
68°
32°
23
Hist. Avg.
68°
31°
24
Hist. Avg.
68°
31°
25
Hist. Avg.
67°
31°
26
Hist. Avg.
67°
30°
27
Hist. Avg.
66°
30°
28
Hist. Avg.
66°
30°
29
Hist. Avg.
66°
29°
30
Hist. Avg.
65°
29°
1
Hist. Avg.
65°
28°
2
Hist. Avg.
65°
28°
3
Hist. Avg.
64°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Heeney
Heeney's September 2026 forecast shows daily high temperatures ranging from 68° to 77°, with overnight lows between 31° and 40°. The average high for September is 74° with an average low of 37°. 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 Heeney. See also: October | November | December.