S
M
T
W
T
F
S
30
74°
46°
31
73°
47°
1
72°
43°
2
71°
48°
3
74°
51°
4
77°
47°
5
76°
41°
6
72°
40°
7
69°
40°
8
67°
42°
9
68°
45°
10
69°
44°
11
67°
39°
12
66°
39°
13
Hist. Avg.
73°
43°
14
Hist. Avg.
73°
42°
15
Hist. Avg.
72°
42°
16
Hist. Avg.
72°
42°
17
Hist. Avg.
71°
41°
18
Hist. Avg.
71°
41°
19
Hist. Avg.
70°
40°
20
Hist. Avg.
70°
40°
21
Hist. Avg.
69°
39°
22
Hist. Avg.
69°
39°
23
Hist. Avg.
68°
38°
24
Hist. Avg.
68°
38°
25
Hist. Avg.
67°
38°
26
Hist. Avg.
67°
37°
27
Hist. Avg.
66°
37°
28
Hist. Avg.
66°
36°
29
Hist. Avg.
66°
36°
30
Hist. Avg.
65°
36°
1
Hist. Avg.
65°
35°
2
Hist. Avg.
64°
35°
3
Hist. Avg.
64°
34°
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 66° to 77°, with overnight lows between 39° and 51°. The average high for September is 71° with an average low of 44°. 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.