S
M
T
W
T
F
S
30
94°
69°
31
93°
67°
1
92°
60°
2
84°
59°
3
83°
63°
4
90°
68°
5
91°
66°
6
92°
67°
7
91°
65°
8
89°
66°
9
90°
63°
10
89°
57°
11
80°
58°
12
82°
62°
13
85°
64°
14
87°
63°
15
87°
63°
16
81°
62°
17
84°
53°
18
80°
51°
19
75°
53°
20
76°
53°
21
77°
59°
22
80°
62°
23
84°
62°
24
83°
60°
25
84°
51°
26
81°
52°
27
73°
50°
28
72°
49°
29
71°
50°
30
72°
49°
1
Hist. Avg.
76°
52°
2
Hist. Avg.
75°
52°
3
Hist. Avg.
75°
52°
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 71° to 94°, with overnight lows between 49° and 69°. The average high for September is 84° with an average low of 59°. 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.
