S
M
T
W
T
F
S
30
74°
59°
31
75°
60°
1
79°
56°
2
76°
57°
3
77°
53°
4
76°
52°
5
75°
52°
6
79°
57°
7
80°
57°
8
79°
56°
9
80°
57°
10
78°
57°
11
77°
56°
12
79°
56°
13
79°
55°
14
78°
56°
15
79°
54°
16
78°
48°
17
73°
50°
18
69°
54°
19
74°
53°
20
76°
54°
21
77°
52°
22
76°
46°
23
73°
44°
24
Hist. Avg.
71°
48°
25
Hist. Avg.
70°
48°
26
Hist. Avg.
70°
47°
27
Hist. Avg.
70°
47°
28
Hist. Avg.
69°
46°
29
Hist. Avg.
69°
46°
30
Hist. Avg.
68°
46°
1
Hist. Avg.
68°
45°
2
Hist. Avg.
68°
45°
3
Hist. Avg.
67°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Devens
Devens's September 2026 forecast shows daily high temperatures ranging from 69° to 80°, with overnight lows between 44° and 60°. The average high for September is 77° 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 Devens. See also: October | November | December.