S
M
T
W
T
F
S
30
84°
59°
31
80°
58°
1
68°
62°
2
72°
62°
3
77°
62°
4
83°
60°
5
72°
56°
6
73°
52°
7
78°
56°
8
79°
56°
9
76°
63°
10
78°
54°
11
72°
53°
12
71°
54°
13
72°
55°
14
77°
57°
15
82°
57°
16
80°
52°
17
77°
55°
18
68°
50°
19
75°
55°
20
74°
54°
21
71°
53°
22
72°
54°
23
71°
54°
24
72°
53°
25
69°
52°
26
72°
53°
27
73°
54°
28
72°
51°
29
64°
49°
30
67°
49°
1
64°
47°
2
63°
48°
3
62°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tewksbury
Tewksbury's September 2026 forecast shows daily high temperatures ranging from 62° to 83°, with overnight lows between 47° and 63°. The average high for September is 73° with an average low of 54°. 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 Tewksbury. See also: October | November | December.