S
M
T
W
T
F
S
30
68°
44°
31
71°
40°
1
78°
41°
2
76°
51°
3
61°
54°
4
59°
36°
5
61°
31°
6
67°
37°
7
72°
37°
8
73°
50°
9
70°
48°
10
54°
45°
11
52°
34°
12
57°
34°
13
65°
42°
14
55°
35°
15
59°
38°
16
60°
35°
17
62°
41°
18
66°
41°
19
69°
45°
20
67°
45°
21
55°
35°
22
54°
41°
23
58°
42°
24
63°
44°
25
64°
44°
26
63°
43°
27
59°
41°
28
53°
40°
29
50°
38°
30
52°
40°
1
54°
39°
2
60°
40°
3
60°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grimshaw
Grimshaw's September 2026 forecast shows daily high temperatures ranging from 50° to 73°, with overnight lows between 34° and 50°. The average high for September is 60° with an average low of 41°. 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 Grimshaw. See also: October | November | December.
