S
M
T
W
T
F
S
30
86°
63°
31
86°
63°
1
85°
62°
2
86°
61°
3
85°
61°
4
85°
60°
5
84°
58°
6
85°
60°
7
86°
62°
8
87°
62°
9
87°
61°
10
86°
62°
11
86°
62°
12
85°
61°
13
86°
62°
14
86°
59°
15
84°
58°
16
84°
57°
17
83°
58°
18
76°
52°
19
74°
49°
20
75°
50°
21
82°
49°
22
83°
49°
23
82°
55°
24
81°
51°
25
77°
49°
26
79°
50°
27
78°
54°
28
80°
52°
29
77°
51°
30
72°
49°
1
78°
48°
2
80°
50°
3
79°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jonesville
Jonesville's September 2026 forecast shows daily high temperatures ranging from 72° to 87°, with overnight lows between 48° and 63°. The average high for September is 82° with an average low of 56°. 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 Jonesville. See also: October | November | December.
