S
M
T
W
T
F
S
30
69°
46°
31
66°
45°
1
66°
44°
2
67°
53°
3
68°
49°
4
68°
43°
5
63°
44°
6
66°
52°
7
68°
53°
8
74°
52°
9
74°
51°
10
71°
49°
11
64°
50°
12
64°
49°
13
72°
48°
14
61°
43°
15
61°
42°
16
Hist. Avg.
68°
46°
17
Hist. Avg.
68°
46°
18
Hist. Avg.
68°
46°
19
Hist. Avg.
67°
46°
20
Hist. Avg.
67°
45°
21
Hist. Avg.
67°
45°
22
Hist. Avg.
66°
45°
23
Hist. Avg.
66°
44°
24
Hist. Avg.
66°
44°
25
Hist. Avg.
65°
44°
26
Hist. Avg.
65°
43°
27
Hist. Avg.
65°
43°
28
Hist. Avg.
64°
42°
29
Hist. Avg.
64°
42°
30
Hist. Avg.
63°
42°
1
Hist. Avg.
63°
41°
2
Hist. Avg.
63°
41°
3
Hist. Avg.
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Dorset
Dorset's September 2026 forecast shows daily high temperatures ranging from 61° to 74°, with overnight lows between 42° and 53°. The average high for September is 67° with an average low of 48°. 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 Dorset. See also: October | November | December.
