S
M
T
W
T
F
S
30
72°
68°
31
79°
66°
1
83°
70°
2
88°
71°
3
80°
67°
4
78°
63°
5
76°
59°
6
75°
59°
7
77°
61°
8
72°
58°
9
72°
60°
10
75°
62°
11
74°
59°
12
73°
59°
13
69°
58°
14
70°
65°
15
74°
63°
16
75°
62°
17
75°
59°
18
68°
55°
19
72°
61°
20
77°
63°
21
78°
63°
22
78°
62°
23
76°
61°
24
76°
60°
25
76°
60°
26
75°
59°
27
76°
60°
28
76°
59°
29
75°
58°
30
69°
57°
1
69°
57°
2
73°
58°
3
73°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Erie
Erie's September 2026 forecast shows daily high temperatures ranging from 68° to 88°, with overnight lows between 55° and 71°. The average high for September is 75° with an average low of 61°. 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 Erie. See also: October | November | December.
