S
M
T
W
T
F
S
30
75°
55°
31
80°
59°
1
80°
59°
2
81°
58°
3
81°
51°
4
77°
49°
5
73°
50°
6
73°
56°
7
77°
56°
8
79°
55°
9
78°
56°
10
73°
55°
11
78°
54°
12
77°
56°
13
77°
56°
14
76°
55°
15
78°
56°
16
78°
53°
17
76°
54°
18
76°
48°
19
74°
46°
20
70°
45°
21
67°
43°
22
67°
50°
23
68°
47°
24
70°
44°
25
66°
43°
26
66°
44°
27
69°
43°
28
72°
49°
29
71°
48°
30
72°
47°
1
66°
48°
2
66°
40°
3
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jamison City
Jamison City's September 2026 forecast shows daily high temperatures ranging from 65° to 81°, with overnight lows between 40° and 59°. The average high for September is 73° with an average low of 51°. 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 Jamison City. See also: October | November | December.