S
M
T
W
T
F
S
30
91°
66°
31
90°
65°
1
86°
65°
2
87°
68°
3
86°
66°
4
86°
67°
5
88°
67°
6
89°
68°
7
90°
64°
8
86°
63°
9
84°
62°
10
86°
63°
11
86°
63°
12
88°
65°
13
88°
67°
14
84°
62°
15
82°
61°
16
Hist. Avg.
85°
63°
17
Hist. Avg.
84°
63°
18
Hist. Avg.
84°
63°
19
Hist. Avg.
84°
62°
20
Hist. Avg.
84°
62°
21
Hist. Avg.
83°
62°
22
Hist. Avg.
83°
62°
23
Hist. Avg.
83°
61°
24
Hist. Avg.
82°
61°
25
Hist. Avg.
82°
60°
26
Hist. Avg.
82°
60°
27
Hist. Avg.
81°
60°
28
Hist. Avg.
81°
59°
29
Hist. Avg.
81°
59°
30
Hist. Avg.
80°
58°
1
Hist. Avg.
80°
58°
2
Hist. Avg.
80°
58°
3
Hist. Avg.
80°
57°
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 82° to 91°, with overnight lows between 61° and 68°. The average high for September is 87° with an average low of 65°. 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.