S
M
T
W
T
F
S
30
73°
55°
31
68°
54°
1
66°
54°
2
70°
50°
3
68°
48°
4
77°
55°
5
66°
52°
6
69°
49°
7
72°
57°
8
78°
56°
9
61°
47°
10
61°
46°
11
64°
48°
12
63°
49°
13
65°
52°
14
66°
53°
15
69°
53°
16
62°
49°
17
58°
47°
18
59°
48°
19
59°
49°
20
64°
48°
21
64°
48°
22
62°
49°
23
66°
48°
24
66°
48°
25
65°
46°
26
66°
42°
27
59°
40°
28
59°
40°
29
60°
39°
30
60°
47°
1
58°
44°
2
58°
42°
3
61°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grub
Grub's September 2026 forecast shows daily high temperatures ranging from 58° to 78°, with overnight lows between 39° and 57°. The average high for September is 63° 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 Grub. See also: October | November | December.
