S
M
T
W
T
F
S
30
80°
52°
31
83°
53°
1
84°
54°
2
85°
55°
3
88°
56°
4
90°
57°
5
89°
52°
6
83°
50°
7
85°
54°
8
84°
48°
9
76°
51°
10
77°
54°
11
76°
53°
12
77°
52°
13
76°
53°
14
79°
43°
15
73°
40°
16
71°
41°
17
Hist. Avg.
78°
46°
18
Hist. Avg.
78°
46°
19
Hist. Avg.
78°
46°
20
Hist. Avg.
77°
46°
21
Hist. Avg.
77°
45°
22
Hist. Avg.
76°
45°
23
Hist. Avg.
76°
44°
24
Hist. Avg.
75°
44°
25
Hist. Avg.
75°
44°
26
Hist. Avg.
74°
44°
27
Hist. Avg.
74°
43°
28
Hist. Avg.
73°
43°
29
Hist. Avg.
73°
42°
30
Hist. Avg.
72°
42°
1
Hist. Avg.
72°
42°
2
Hist. Avg.
71°
42°
3
Hist. Avg.
70°
41°
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 71° to 90°, with overnight lows between 40° and 57°. The average high for September is 81° 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 McDonald. See also: October | November | December.