S
M
T
W
T
F
S
30
84°
59°
31
74°
56°
1
66°
62°
2
69°
63°
3
71°
62°
4
78°
59°
5
69°
54°
6
71°
51°
7
76°
55°
8
75°
52°
9
72°
53°
10
75°
54°
11
74°
53°
12
75°
53°
13
73°
54°
14
72°
51°
15
71°
53°
16
72°
55°
17
76°
54°
18
68°
51°
19
69°
51°
20
70°
53°
21
74°
54°
22
75°
55°
23
75°
53°
24
74°
52°
25
73°
51°
26
73°
53°
27
74°
52°
28
73°
51°
29
72°
48°
30
65°
45°
1
62°
45°
2
63°
49°
3
70°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newburyport
Newburyport's September 2026 forecast shows daily high temperatures ranging from 62° to 78°, with overnight lows between 45° and 63°. The average high for September is 72° with an average low of 53°. 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 Newburyport. See also: October | November | December.
