S
M
T
W
T
F
S
30
81°
62°
31
83°
61°
1
85°
59°
2
83°
53°
3
75°
58°
4
76°
60°
5
76°
56°
6
84°
51°
7
77°
49°
8
73°
50°
9
75°
56°
10
74°
59°
11
75°
58°
12
81°
55°
13
82°
49°
14
73°
48°
15
70°
46°
16
71°
50°
17
70°
48°
18
71°
46°
19
77°
43°
20
69°
46°
21
69°
54°
22
72°
46°
23
79°
53°
24
77°
54°
25
77°
54°
26
76°
53°
27
77°
51°
28
76°
45°
29
73°
49°
30
64°
49°
1
71°
48°
2
73°
51°
3
Hist. Avg.
67°
45°
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 64° to 85°, with overnight lows between 43° and 62°. The average high for September is 75° with an average low of 52°. 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.
