S
M
T
W
T
F
S
30
79°
56°
31
75°
64°
1
70°
62°
2
73°
61°
3
79°
67°
4
83°
68°
5
78°
61°
6
N/A
7
80°
52°
8
82°
59°
9
79°
69°
10
83°
61°
11
78°
53°
12
76°
59°
13
80°
62°
14
81°
59°
15
76°
59°
16
77°
54°
17
75°
55°
18
74°
55°
19
75°
54°
20
74°
53°
21
73°
57°
22
68°
57°
23
69°
56°
24
71°
56°
25
72°
55°
26
73°
54°
27
69°
51°
28
69°
55°
29
74°
55°
30
75°
56°
1
74°
55°
2
73°
55°
3
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Norwich
Norwich's September 2026 forecast shows daily high temperatures ranging from 68° to 83°, with overnight lows between 51° and 69°. The average high for September is 75° with an average low of 56°. 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 Norwich. See also: October | November | December.