S
M
T
W
T
F
S
30
105°
72°
31
101°
68°
1
98°
67°
2
100°
72°
3
104°
71°
4
104°
67°
5
99°
72°
6
93°
71°
7
97°
71°
8
99°
72°
9
94°
64°
10
87°
66°
11
100°
66°
12
95°
65°
13
99°
64°
14
86°
57°
15
76°
56°
16
81°
61°
17
88°
62°
18
88°
57°
19
86°
58°
20
83°
53°
21
86°
60°
22
85°
59°
23
85°
59°
24
78°
58°
25
79°
58°
26
81°
57°
27
81°
58°
28
77°
57°
29
76°
47°
30
79°
44°
1
70°
44°
2
71°
43°
3
70°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gruver
Gruver's September 2026 forecast shows daily high temperatures ranging from 70° to 100°, with overnight lows between 43° and 72°. The average high for September is 84° with an average low of 58°. 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 Gruver. See also: October | November | December.