S
M
T
W
T
F
S
30
77°
59°
31
77°
57°
1
78°
51°
2
74°
51°
3
77°
50°
4
74°
53°
5
76°
55°
6
77°
56°
7
76°
48°
8
68°
45°
9
66°
51°
10
68°
54°
11
71°
47°
12
72°
55°
13
73°
53°
14
72°
54°
15
72°
54°
16
64°
48°
17
65°
46°
18
65°
42°
19
Hist. Avg.
67°
46°
20
Hist. Avg.
66°
46°
21
Hist. Avg.
66°
45°
22
Hist. Avg.
66°
45°
23
Hist. Avg.
65°
44°
24
Hist. Avg.
65°
44°
25
Hist. Avg.
64°
43°
26
Hist. Avg.
64°
43°
27
Hist. Avg.
63°
42°
28
Hist. Avg.
63°
42°
29
Hist. Avg.
62°
42°
30
Hist. Avg.
62°
41°
1
Hist. Avg.
62°
41°
2
Hist. Avg.
61°
40°
3
Hist. Avg.
61°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mckinley
Mckinley's September 2026 forecast shows daily high temperatures ranging from 64° to 78°, with overnight lows between 42° and 59°. The average high for September is 72° with an average low of 51°. 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 Mckinley. See also: October | November | December.