S
M
T
W
T
F
S
30
78°
51°
31
79°
53°
1
78°
52°
2
77°
54°
3
78°
54°
4
78°
53°
5
77°
53°
6
76°
52°
7
75°
53°
8
75°
51°
9
74°
51°
10
76°
52°
11
76°
50°
12
75°
51°
13
76°
51°
14
75°
50°
15
72°
51°
16
74°
49°
17
71°
48°
18
66°
44°
19
67°
37°
20
62°
39°
21
63°
46°
22
64°
38°
23
62°
38°
24
61°
39°
25
64°
45°
26
68°
46°
27
62°
42°
28
60°
37°
29
61°
37°
30
63°
38°
1
67°
42°
2
66°
45°
3
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Haverhill
Haverhill's September 2026 forecast shows daily high temperatures ranging from 60° to 79°, with overnight lows between 37° and 54°. The average high for September is 70° with an average low of 47°. 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 Haverhill. See also: October | November | December.
