S
M
T
W
T
F
S
30
88°
66°
31
88°
63°
1
88°
63°
2
87°
66°
3
88°
69°
4
91°
70°
5
82°
68°
6
73°
64°
7
78°
63°
8
81°
68°
9
82°
57°
10
81°
51°
11
83°
58°
12
73°
51°
13
69°
47°
14
62°
52°
15
71°
52°
16
74°
47°
17
68°
61°
18
69°
61°
19
62°
59°
20
65°
56°
21
56°
52°
22
59°
52°
23
70°
51°
24
61°
56°
25
66°
58°
26
65°
58°
27
71°
56°
28
73°
60°
29
69°
52°
30
69°
51°
1
66°
50°
2
69°
48°
3
66°
44°
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 61° to 73°, with overnight lows between 44° and 60°. The average high for September is 68° with an average low of 53°. 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.