S
M
T
W
T
F
S
30
66°
55°
31
66°
54°
1
68°
54°
2
66°
59°
3
72°
63°
4
66°
55°
5
66°
52°
6
77°
57°
7
64°
57°
8
63°
54°
9
63°
52°
10
64°
50°
11
66°
55°
12
68°
54°
13
64°
63°
14
70°
63°
15
64°
54°
16
63°
52°
17
63°
54°
18
N/A
19
68°
55°
20
67°
50°
21
69°
55°
22
70°
55°
23
70°
49°
24
67°
57°
25
68°
53°
26
69°
54°
27
68°
52°
28
65°
51°
29
64°
50°
30
65°
51°
1
65°
49°
2
64°
47°
3
62°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Newport
Newport's September 2026 forecast shows daily high temperatures ranging from 62° to 70°, with overnight lows between 44° and 57°. The average high for September is 67° with an average low of 51°. 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 Newport. See also: October | November | December.