S
M
T
W
T
F
S
30
82°
61°
31
83°
60°
1
82°
61°
2
82°
61°
3
83°
60°
4
83°
61°
5
82°
60°
6
82°
60°
7
83°
58°
8
79°
55°
9
78°
57°
10
79°
57°
11
81°
56°
12
77°
54°
13
68°
46°
14
66°
46°
15
66°
53°
16
68°
52°
17
67°
47°
18
78°
43°
19
80°
40°
20
76°
41°
21
65°
40°
22
64°
41°
23
66°
50°
24
69°
52°
25
70°
53°
26
70°
54°
27
73°
50°
28
73°
43°
29
67°
37°
30
59°
36°
1
60°
34°
2
56°
37°
3
59°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Andover
Andover's September 2026 forecast shows daily high temperatures ranging from 56° to 83°, with overnight lows between 34° and 61°. The average high for September is 73° with an average low of 50°. 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 Andover. See also: October | November | December.
