S
M
T
W
T
F
S
30
89°
61°
31
88°
61°
1
87°
60°
2
87°
60°
3
86°
59°
4
85°
59°
5
85°
60°
6
86°
58°
7
84°
56°
8
74°
55°
9
79°
56°
10
83°
56°
11
84°
54°
12
83°
55°
13
72°
53°
14
70°
54°
15
75°
54°
16
78°
51°
17
80°
48°
18
68°
48°
19
69°
52°
20
75°
51°
21
79°
51°
22
79°
48°
23
77°
46°
24
71°
48°
25
75°
47°
26
78°
41°
27
77°
43°
28
70°
48°
29
77°
46°
30
75°
47°
1
72°
49°
2
76°
48°
3
77°
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 68° to 89°, with overnight lows between 41° and 61°. The average high for September is 79° with an average low of 52°. 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.