S
M
T
W
T
F
S
30
89°
67°
31
88°
61°
1
84°
61°
2
83°
60°
3
86°
61°
4
88°
65°
5
88°
65°
6
87°
63°
7
85°
61°
8
84°
61°
9
82°
58°
10
82°
58°
11
83°
57°
12
81°
58°
13
80°
57°
14
79°
57°
15
80°
58°
16
82°
58°
17
81°
61°
18
84°
61°
19
84°
62°
20
83°
61°
21
Hist. Avg.
77°
58°
22
Hist. Avg.
77°
57°
23
Hist. Avg.
76°
57°
24
Hist. Avg.
76°
56°
25
Hist. Avg.
76°
56°
26
Hist. Avg.
75°
56°
27
Hist. Avg.
75°
55°
28
Hist. Avg.
75°
55°
29
Hist. Avg.
74°
55°
30
Hist. Avg.
74°
54°
1
Hist. Avg.
74°
54°
2
Hist. Avg.
73°
54°
3
Hist. Avg.
73°
53°
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 79° to 89°, with overnight lows between 57° and 67°. The average high for September is 84° with an average low of 61°. 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.