S
M
T
W
T
F
S
30
74°
52°
31
86°
57°
1
72°
60°
2
66°
57°
3
66°
56°
4
69°
55°
5
73°
56°
6
66°
57°
7
73°
55°
8
82°
51°
9
88°
55°
10
79°
57°
11
68°
52°
12
65°
51°
13
65°
48°
14
73°
51°
15
81°
47°
16
86°
48°
17
86°
49°
18
81°
50°
19
72°
49°
20
72°
49°
21
73°
48°
22
76°
47°
23
77°
48°
24
70°
42°
25
65°
47°
26
65°
42°
27
64°
40°
28
64°
40°
29
63°
38°
30
63°
38°
1
67°
46°
2
67°
44°
3
64°
39°
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 63° to 86°, with overnight lows between 38° and 52°. The average high for September is 71° with an average low of 46°. 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.
