S
M
T
W
T
F
S
30
102°
73°
31
100°
73°
1
98°
70°
2
98°
73°
3
98°
74°
4
97°
73°
5
98°
73°
6
100°
74°
7
101°
77°
8
102°
78°
9
99°
66°
10
89°
66°
11
96°
71°
12
94°
66°
13
90°
64°
14
84°
63°
15
82°
60°
16
91°
66°
17
86°
64°
18
87°
65°
19
81°
57°
20
78°
63°
21
87°
64°
22
86°
63°
23
87°
63°
24
83°
62°
25
74°
62°
26
78°
61°
27
79°
62°
28
80°
62°
29
77°
61°
30
80°
50°
1
69°
48°
2
69°
47°
3
68°
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 68° to 102°, with overnight lows between 46° and 78°. The average high for September is 85° with an average low of 63°. 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.
