S
M
T
W
T
F
S
30
84°
60°
31
85°
63°
1
83°
61°
2
84°
63°
3
82°
63°
4
83°
62°
5
82°
62°
6
81°
61°
7
81°
61°
8
80°
60°
9
80°
60°
10
79°
59°
11
81°
59°
12
81°
58°
13
80°
60°
14
81°
59°
15
78°
60°
16
79°
57°
17
79°
57°
18
72°
56°
19
75°
49°
20
70°
48°
21
69°
55°
22
71°
48°
23
70°
48°
24
68°
49°
25
69°
53°
26
72°
52°
27
69°
50°
28
67°
47°
29
67°
47°
30
68°
45°
1
69°
50°
2
69°
53°
3
70°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Roxbury
Roxbury's September 2026 forecast shows daily high temperatures ranging from 67° to 85°, with overnight lows between 45° and 63°. The average high for September is 76° with an average low of 56°. 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.