S
M
T
W
T
F
S
30
74°
53°
31
79°
51°
1
81°
48°
2
74°
47°
3
73°
49°
4
77°
56°
5
79°
55°
6
81°
48°
7
75°
52°
8
73°
52°
9
74°
55°
10
75°
54°
11
76°
52°
12
75°
53°
13
74°
52°
14
70°
46°
15
69°
45°
16
69°
43°
17
70°
50°
18
70°
50°
19
73°
52°
20
76°
51°
21
74°
46°
22
71°
42°
23
67°
48°
24
66°
43°
25
70°
42°
26
66°
47°
27
68°
46°
28
Hist. Avg.
65°
46°
29
Hist. Avg.
64°
46°
30
Hist. Avg.
64°
46°
1
Hist. Avg.
63°
45°
2
Hist. Avg.
63°
45°
3
Hist. Avg.
62°
45°
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 66° to 81°, with overnight lows between 42° and 56°. The average high for September is 73° with an average low of 49°. 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.