S
M
T
W
T
F
S
30
74°
47°
31
72°
45°
1
68°
46°
2
68°
44°
3
69°
44°
4
69°
45°
5
68°
45°
6
68°
48°
7
69°
52°
8
68°
45°
9
68°
45°
10
69°
44°
11
68°
47°
12
67°
46°
13
68°
47°
14
67°
46°
15
66°
45°
16
67°
42°
17
66°
41°
18
67°
42°
19
72°
45°
20
Hist. Avg.
68°
48°
21
Hist. Avg.
68°
48°
22
Hist. Avg.
67°
48°
23
Hist. Avg.
67°
47°
24
Hist. Avg.
66°
47°
25
Hist. Avg.
66°
46°
26
Hist. Avg.
66°
46°
27
Hist. Avg.
65°
46°
28
Hist. Avg.
65°
45°
29
Hist. Avg.
65°
45°
30
Hist. Avg.
64°
45°
1
Hist. Avg.
64°
44°
2
Hist. Avg.
63°
44°
3
Hist. Avg.
63°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Erin
Erin's September 2026 forecast shows daily high temperatures ranging from 66° to 74°, with overnight lows between 41° and 52°. The average high for September is 68° with an average low of 45°. 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.
