S
M
T
W
T
F
S
30
76°
51°
31
78°
52°
1
78°
54°
2
74°
47°
3
78°
52°
4
84°
53°
5
83°
53°
6
79°
52°
7
75°
48°
8
77°
52°
9
77°
48°
10
73°
46°
11
72°
44°
12
72°
45°
13
71°
43°
14
71°
43°
15
72°
44°
16
73°
49°
17
71°
51°
18
70°
48°
19
70°
45°
20
72°
48°
21
72°
44°
22
72°
48°
23
73°
50°
24
77°
48°
25
78°
49°
26
77°
43°
27
68°
41°
28
66°
39°
29
65°
40°
30
66°
40°
1
68°
44°
2
70°
44°
3
71°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Eugene
Eugene's September 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 39° and 54°. The average high for September is 73° with an average low of 47°. 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 Eugene. See also: October | November | December.
