S
M
T
W
T
F
S
30
80°
68°
31
89°
71°
1
95°
74°
2
94°
72°
3
93°
74°
4
95°
73°
5
86°
64°
6
81°
57°
7
78°
59°
8
86°
68°
9
86°
58°
10
77°
52°
11
77°
58°
12
80°
60°
13
81°
57°
14
77°
54°
15
79°
58°
16
77°
57°
17
77°
55°
18
74°
50°
19
74°
57°
20
76°
56°
21
72°
55°
22
70°
54°
23
72°
54°
24
76°
53°
25
77°
55°
26
76°
54°
27
76°
55°
28
77°
55°
29
76°
54°
30
75°
54°
1
72°
48°
2
65°
44°
3
62°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Amboy
Amboy's September 2026 forecast shows daily high temperatures ranging from 62° to 86°, with overnight lows between 40° and 68°. The average high for September is 76° with an average low of 55°. 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 Amboy. See also: October | November | December.
