S
M
T
W
T
F
S
30
93°
72°
31
92°
71°
1
92°
72°
2
92°
68°
3
87°
64°
4
86°
64°
5
85°
66°
6
87°
69°
7
86°
68°
8
89°
70°
9
92°
70°
10
88°
67°
11
86°
65°
12
86°
69°
13
90°
63°
14
90°
61°
15
84°
60°
16
83°
62°
17
84°
61°
18
85°
62°
19
87°
65°
20
89°
65°
21
89°
66°
22
87°
66°
23
83°
65°
24
83°
64°
25
84°
63°
26
86°
62°
27
87°
63°
28
86°
64°
29
87°
64°
30
87°
63°
1
86°
63°
2
87°
62°
3
86°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Oak Grove
Oak Grove's September 2026 forecast shows daily high temperatures ranging from 83° to 93°, with overnight lows between 56° and 72°. The average high for September is 87° with an average low of 65°. 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 Oak Grove. See also: October | November | December.