S
M
T
W
T
F
S
30
73°
50°
31
76°
52°
1
79°
48°
2
72°
47°
3
71°
48°
4
75°
55°
5
75°
55°
6
79°
49°
7
74°
53°
8
71°
54°
9
70°
54°
10
77°
53°
11
73°
53°
12
72°
54°
13
69°
51°
14
69°
45°
15
67°
45°
16
67°
43°
17
68°
51°
18
70°
50°
19
74°
51°
20
75°
52°
21
71°
45°
22
70°
46°
23
65°
49°
24
66°
43°
25
69°
41°
26
64°
48°
27
64°
44°
28
Hist. Avg.
65°
42°
29
Hist. Avg.
65°
41°
30
Hist. Avg.
64°
41°
1
Hist. Avg.
64°
40°
2
Hist. Avg.
64°
40°
3
Hist. Avg.
63°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Machias
Machias's September 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 41° and 55°. The average high for September is 71° 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 Machias. See also: October | November | December.
