S
M
T
W
T
F
S
30
72°
63°
31
82°
61°
1
81°
52°
2
82°
54°
3
81°
57°
4
70°
61°
5
73°
61°
6
81°
59°
7
N/A
8
76°
54°
9
71°
47°
10
75°
56°
11
77°
47°
12
71°
47°
13
61°
48°
14
61°
46°
15
64°
45°
16
65°
44°
17
67°
48°
18
66°
44°
19
63°
42°
20
67°
44°
21
64°
50°
22
67°
51°
23
70°
51°
24
71°
49°
25
66°
49°
26
66°
48°
27
68°
50°
28
67°
50°
29
67°
48°
30
59°
47°
1
56°
42°
2
54°
39°
3
54°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in McGregor
McGregor's September 2026 forecast shows daily high temperatures ranging from 54° to 77°, with overnight lows between 37° and 56°. The average high for September is 66° with an average low of 47°. 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 McGregor. See also: October | November | December.