S
M
T
W
T
F
S
30
70°
51°
31
75°
54°
1
77°
47°
2
74°
46°
3
69°
45°
4
70°
47°
5
70°
54°
6
75°
52°
7
76°
48°
8
69°
51°
9
67°
52°
10
69°
52°
11
70°
50°
12
71°
50°
13
69°
49°
14
65°
44°
15
66°
43°
16
65°
42°
17
65°
44°
18
66°
49°
19
68°
49°
20
69°
50°
21
70°
46°
22
64°
40°
23
63°
46°
24
62°
49°
25
68°
41°
26
60°
44°
27
61°
44°
28
Hist. Avg.
65°
44°
29
Hist. Avg.
65°
44°
30
Hist. Avg.
64°
43°
1
Hist. Avg.
64°
43°
2
Hist. Avg.
64°
42°
3
Hist. Avg.
63°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Roxbury
Roxbury's September 2026 forecast shows daily high temperatures ranging from 60° to 77°, with overnight lows between 40° and 54°. The average high for September is 68° 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 Roxbury. See also: October | November | December.