S
M
T
W
T
F
S
30
73°
63°
31
85°
66°
1
89°
71°
2
92°
70°
3
83°
68°
4
76°
64°
5
76°
56°
6
76°
54°
7
76°
47°
8
81°
52°
9
86°
67°
10
79°
64°
11
75°
55°
12
74°
56°
13
84°
63°
14
67°
48°
15
78°
48°
16
81°
67°
17
74°
68°
18
72°
58°
19
68°
58°
20
68°
56°
21
66°
50°
22
61°
53°
23
61°
45°
24
67°
40°
25
65°
43°
26
67°
45°
27
67°
47°
28
66°
48°
29
69°
47°
30
67°
48°
1
63°
48°
2
65°
45°
3
63°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Orwell
Orwell's September 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 40° and 53°. The average high for September is 65° with an average low of 47°. 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 Orwell. See also: October | November | December.