S
M
T
W
T
F
S
30
76°
57°
31
81°
60°
1
83°
53°
2
80°
52°
3
75°
51°
4
76°
53°
5
76°
60°
6
80°
58°
7
82°
55°
8
75°
58°
9
74°
58°
10
77°
57°
11
77°
56°
12
78°
56°
13
75°
55°
14
72°
50°
15
72°
49°
16
73°
49°
17
72°
50°
18
71°
55°
19
74°
54°
20
75°
55°
21
77°
51°
22
72°
47°
23
70°
52°
24
69°
54°
25
75°
48°
26
74°
45°
27
Hist. Avg.
70°
46°
28
Hist. Avg.
70°
46°
29
Hist. Avg.
69°
46°
30
Hist. Avg.
69°
45°
1
Hist. Avg.
69°
45°
2
Hist. Avg.
68°
44°
3
Hist. Avg.
68°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Oak Ridge
Oak Ridge's September 2026 forecast shows daily high temperatures ranging from 69° to 83°, with overnight lows between 45° and 60°. The average high for September is 75° with an average low of 54°. 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 Ridge. See also: October | November | December.