S
M
T
W
T
F
S
30
74°
53°
31
73°
53°
1
73°
54°
2
74°
57°
3
73°
58°
4
74°
59°
5
75°
59°
6
74°
60°
7
80°
60°
8
79°
59°
9
78°
58°
10
73°
59°
11
78°
59°
12
74°
58°
13
71°
57°
14
70°
56°
15
69°
56°
16
69°
55°
17
70°
56°
18
68°
56°
19
72°
55°
20
68°
54°
21
78°
54°
22
78°
47°
23
74°
43°
24
66°
45°
25
67°
52°
26
71°
51°
27
69°
53°
28
75°
51°
29
75°
48°
30
73°
50°
1
72°
51°
2
73°
49°
3
73°
48°
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 66° to 80°, with overnight lows between 43° and 60°. The average high for September is 73° with an average low of 54°. 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.
