S
M
T
W
T
F
S
30
73°
56°
31
75°
57°
1
71°
52°
2
77°
58°
3
80°
56°
4
82°
53°
5
76°
48°
6
74°
48°
7
74°
55°
8
78°
53°
9
78°
46°
10
69°
45°
11
68°
43°
12
68°
45°
13
69°
50°
14
68°
43°
15
67°
41°
16
65°
41°
17
65°
42°
18
66°
41°
19
65°
41°
20
65°
42°
21
66°
45°
22
69°
50°
23
71°
42°
24
73°
50°
25
72°
48°
26
72°
39°
27
63°
47°
28
63°
48°
29
65°
45°
30
66°
45°
1
63°
41°
2
60°
39°
3
61°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grand Meadow
Grand Meadow's September 2026 forecast shows daily high temperatures ranging from 60° to 82°, with overnight lows between 39° and 58°. The average high for September is 70° 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 Grand Meadow. See also: October | November | December.