S
M
T
W
T
F
S
30
66°
52°
31
65°
51°
1
67°
52°
2
68°
54°
3
69°
56°
4
69°
51°
5
68°
50°
6
65°
53°
7
67°
52°
8
69°
51°
9
69°
55°
10
68°
55°
11
69°
54°
12
68°
50°
13
65°
48°
14
64°
53°
15
63°
54°
16
64°
55°
17
65°
54°
18
67°
53°
19
64°
55°
20
67°
54°
21
68°
52°
22
66°
48°
23
62°
47°
24
61°
48°
25
61°
49°
26
64°
48°
27
63°
50°
28
61°
54°
29
63°
53°
30
63°
52°
1
64°
53°
2
64°
51°
3
64°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Weymouth
Weymouth's September 2026 forecast shows daily high temperatures ranging from 61° to 69°, with overnight lows between 47° and 56°. The average high for September is 65° with an average low of 52°. 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 Weymouth. See also: October | November | December.
