S
M
T
W
T
F
S
30
69°
45°
31
68°
45°
1
71°
49°
2
71°
53°
3
70°
56°
4
77°
56°
5
80°
53°
6
78°
45°
7
71°
44°
8
69°
45°
9
71°
43°
10
68°
48°
11
69°
48°
12
66°
44°
13
71°
50°
14
74°
50°
15
74°
49°
16
67°
50°
17
66°
49°
18
68°
48°
19
70°
42°
20
66°
44°
21
70°
40°
22
69°
38°
23
63°
39°
24
62°
39°
25
63°
42°
26
62°
38°
27
61°
38°
28
61°
40°
29
59°
36°
30
59°
36°
1
60°
40°
2
65°
35°
3
60°
38°
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 59° to 80°, with overnight lows between 35° and 56°. The average high for September is 68° with an average low of 44°. 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.
