S
M
T
W
T
F
S
30
64°
48°
31
64°
50°
1
66°
60°
2
62°
57°
3
64°
48°
4
63°
49°
5
65°
51°
6
63°
53°
7
60°
54°
8
63°
53°
9
66°
55°
10
67°
54°
11
67°
53°
12
66°
53°
13
65°
51°
14
67°
49°
15
63°
51°
16
61°
51°
17
61°
48°
18
62°
47°
19
61°
53°
20
61°
49°
21
62°
45°
22
61°
46°
23
60°
46°
24
60°
45°
25
61°
47°
26
61°
46°
27
63°
52°
28
60°
52°
29
61°
49°
30
61°
51°
1
62°
50°
2
59°
44°
3
60°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newport
Newport's September 2026 forecast shows daily high temperatures ranging from 59° to 67°, with overnight lows between 44° and 60°. The average high for September is 63° with an average low of 50°. 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.