S
M
T
W
T
F
S
30
90°
54°
31
85°
52°
1
86°
59°
2
92°
51°
3
92°
57°
4
94°
56°
5
96°
57°
6
85°
56°
7
89°
65°
8
82°
57°
9
74°
54°
10
86°
52°
11
89°
50°
12
72°
47°
13
70°
51°
14
87°
55°
15
70°
46°
16
81°
53°
17
71°
56°
18
81°
58°
19
69°
56°
20
62°
51°
21
62°
51°
22
64°
51°
23
68°
52°
24
75°
53°
25
74°
54°
26
76°
51°
27
75°
50°
28
71°
47°
29
67°
45°
30
67°
46°
1
70°
47°
2
69°
39°
3
64°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ellsworth
Ellsworth's September 2026 forecast shows daily high temperatures ranging from 62° to 76°, with overnight lows between 39° and 56°. The average high for September is 69° 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 Ellsworth. See also: October | November | December.