S
M
T
W
T
F
S
30
66°
52°
31
63°
50°
1
69°
47°
2
75°
39°
3
64°
45°
4
68°
49°
5
67°
37°
6
70°
35°
7
73°
34°
8
71°
45°
9
62°
51°
10
59°
44°
11
63°
36°
12
63°
25°
13
68°
27°
14
64°
33°
15
67°
35°
16
72°
37°
17
70°
39°
18
74°
30°
19
70°
35°
20
71°
34°
21
69°
36°
22
61°
35°
23
60°
29°
24
57°
24°
25
46°
42°
26
53°
37°
27
57°
35°
28
50°
43°
29
53°
33°
30
56°
32°
1
50°
24°
2
58°
37°
3
56°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in McGregor
McGregor's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.