S
M
T
W
T
F
S
30
87°
67°
31
86°
66°
1
83°
65°
2
83°
62°
3
84°
61°
4
82°
60°
5
83°
60°
6
84°
61°
7
84°
61°
8
86°
60°
9
83°
59°
10
84°
60°
11
86°
60°
12
85°
64°
13
87°
64°
14
87°
62°
15
86°
63°
16
85°
63°
17
86°
62°
18
84°
62°
19
83°
61°
20
83°
61°
21
82°
60°
22
83°
59°
23
78°
60°
24
Hist. Avg.
79°
55°
25
Hist. Avg.
79°
55°
26
Hist. Avg.
79°
54°
27
Hist. Avg.
78°
54°
28
Hist. Avg.
78°
53°
29
Hist. Avg.
78°
53°
30
Hist. Avg.
77°
52°
1
Hist. Avg.
77°
52°
2
Hist. Avg.
77°
52°
3
Hist. Avg.
76°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in McDonald
McDonald's September 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 59° and 67°. The average high for September is 84° with an average low of 62°. 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 McDonald. See also: October | November | December.