S
M
T
W
T
F
S
30
86°
60°
31
82°
58°
1
81°
58°
2
81°
59°
3
83°
64°
4
84°
61°
5
87°
57°
6
79°
58°
7
80°
57°
8
80°
56°
9
79°
55°
10
80°
55°
11
80°
54°
12
77°
54°
13
76°
53°
14
77°
54°
15
78°
53°
16
80°
54°
17
82°
57°
18
83°
58°
19
83°
59°
20
Hist. Avg.
80°
58°
21
Hist. Avg.
80°
57°
22
Hist. Avg.
79°
57°
23
Hist. Avg.
79°
56°
24
Hist. Avg.
78°
56°
25
Hist. Avg.
78°
56°
26
Hist. Avg.
78°
55°
27
Hist. Avg.
77°
55°
28
Hist. Avg.
77°
54°
29
Hist. Avg.
77°
54°
30
Hist. Avg.
76°
54°
1
Hist. Avg.
76°
53°
2
Hist. Avg.
75°
53°
3
Hist. Avg.
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Halfway
Halfway's September 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 53° and 64°. The average high for September is 81° with an average low of 57°. 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 Halfway. See also: October | November | December.