S
M
T
W
T
F
S
30
77°
62°
31
79°
62°
1
80°
61°
2
77°
57°
3
76°
58°
4
78°
58°
5
80°
57°
6
76°
56°
7
75°
54°
8
74°
55°
9
72°
48°
10
70°
52°
11
74°
52°
12
74°
51°
13
75°
53°
14
75°
53°
15
74°
52°
16
74°
51°
17
71°
51°
18
74°
52°
19
71°
52°
20
73°
51°
21
73°
52°
22
74°
52°
23
73°
49°
24
66°
48°
25
62°
45°
26
64°
47°
27
68°
47°
28
70°
48°
29
71°
48°
30
71°
47°
1
70°
48°
2
70°
48°
3
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Erin
Erin's September 2026 forecast shows daily high temperatures ranging from 62° to 80°, with overnight lows between 45° and 62°. The average high for September is 73° 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 Erin. See also: October | November | December.
