S
M
T
W
T
F
S
30
77°
51°
31
78°
54°
1
81°
55°
2
83°
52°
3
85°
49°
4
84°
51°
5
82°
49°
6
76°
48°
7
81°
53°
8
78°
45°
9
73°
45°
10
75°
52°
11
74°
53°
12
75°
52°
13
72°
51°
14
73°
45°
15
71°
45°
16
73°
43°
17
80°
48°
18
79°
44°
19
Hist. Avg.
77°
47°
20
Hist. Avg.
77°
47°
21
Hist. Avg.
76°
47°
22
Hist. Avg.
76°
47°
23
Hist. Avg.
76°
46°
24
Hist. Avg.
75°
46°
25
Hist. Avg.
75°
46°
26
Hist. Avg.
74°
46°
27
Hist. Avg.
74°
46°
28
Hist. Avg.
74°
45°
29
Hist. Avg.
73°
45°
30
Hist. Avg.
73°
45°
1
Hist. Avg.
72°
45°
2
Hist. Avg.
72°
44°
3
Hist. Avg.
71°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Eugene-Springfield
Eugene-Springfield's September 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 43° and 55°. The average high for September is 78° with an average low of 49°. 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-Springfield. See also: October | November | December.