S
M
T
W
T
F
S
30
81°
54°
31
77°
53°
1
67°
60°
2
71°
60°
3
78°
59°
4
80°
56°
5
74°
54°
6
70°
48°
7
77°
47°
8
76°
51°
9
75°
53°
10
82°
59°
11
73°
48°
12
73°
57°
13
66°
59°
14
68°
42°
15
66°
48°
16
71°
58°
17
71°
57°
18
70°
52°
19
64°
49°
20
61°
47°
21
61°
46°
22
62°
46°
23
62°
45°
24
63°
46°
25
63°
45°
26
60°
42°
27
59°
49°
28
68°
49°
29
67°
46°
30
59°
43°
1
59°
45°
2
60°
47°
3
65°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ashburnham
Ashburnham's September 2026 forecast shows daily high temperatures ranging from 59° to 73°, with overnight lows between 42° and 59°. The average high for September is 64° 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 Ashburnham. See also: October | November | December.
