S
M
T
W
T
F
S
30
77°
55°
31
76°
49°
1
72°
48°
2
69°
50°
3
69°
49°
4
70°
49°
5
68°
48°
6
67°
47°
7
68°
47°
8
68°
49°
9
69°
52°
10
66°
48°
11
67°
49°
12
70°
48°
13
69°
50°
14
70°
51°
15
65°
47°
16
65°
46°
17
63°
45°
18
64°
48°
19
64°
45°
20
63°
52°
21
Hist. Avg.
69°
48°
22
Hist. Avg.
69°
47°
23
Hist. Avg.
68°
47°
24
Hist. Avg.
68°
47°
25
Hist. Avg.
67°
46°
26
Hist. Avg.
67°
46°
27
Hist. Avg.
66°
45°
28
Hist. Avg.
66°
45°
29
Hist. Avg.
66°
45°
30
Hist. Avg.
65°
44°
1
Hist. Avg.
65°
44°
2
Hist. Avg.
64°
44°
3
Hist. Avg.
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ashburnham
Ashburnham's September 2026 forecast shows daily high temperatures ranging from 63° to 77°, with overnight lows between 45° and 55°. The average high for September is 68° with an average low of 49°. 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.
