S
M
T
W
T
F
S
30
88°
67°
31
88°
61°
1
84°
59°
2
81°
60°
3
82°
61°
4
83°
61°
5
84°
60°
6
79°
60°
7
80°
59°
8
80°
62°
9
81°
59°
10
79°
58°
11
80°
59°
12
81°
57°
13
80°
58°
14
79°
58°
15
80°
59°
16
80°
57°
17
79°
55°
18
78°
56°
19
80°
55°
20
Hist. Avg.
83°
56°
21
Hist. Avg.
82°
56°
22
Hist. Avg.
82°
55°
23
Hist. Avg.
82°
55°
24
Hist. Avg.
81°
54°
25
Hist. Avg.
81°
54°
26
Hist. Avg.
80°
54°
27
Hist. Avg.
80°
53°
28
Hist. Avg.
80°
53°
29
Hist. Avg.
79°
52°
30
Hist. Avg.
79°
52°
1
Hist. Avg.
79°
51°
2
Hist. Avg.
78°
51°
3
Hist. Avg.
78°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Oak Grove
Oak Grove's September 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 55° and 67°. The average high for September is 81° with an average low of 59°. 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.