S
M
T
W
T
F
S
31
76°
52°
1
79°
50°
2
78°
54°
3
82°
49°
4
84°
60°
5
89°
61°
6
91°
65°
7
69°
53°
8
73°
49°
9
77°
49°
10
70°
60°
11
81°
61°
12
82°
59°
13
84°
51°
14
84°
57°
15
83°
57°
16
69°
58°
17
65°
57°
18
83°
64°
19
88°
59°
20
79°
60°
21
74°
61°
22
79°
56°
23
85°
60°
24
82°
63°
25
81°
70°
26
83°
66°
27
73°
65°
28
81°
60°
29
75°
58°
30
70°
66°
1
74°
51°
2
71°
48°
3
72°
43°
4
78°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jefferson
Jefferson's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Jefferson. See also: October | November | December.
