S
M
T
W
T
F
S
26
64°
40°
27
64°
37°
28
63°
42°
29
70°
42°
30
75°
43°
1
80°
44°
2
83°
51°
3
83°
50°
4
82°
49°
5
80°
51°
6
82°
51°
7
77°
54°
8
76°
48°
9
75°
48°
10
77°
51°
11
77°
49°
12
90°
49°
13
75°
52°
14
69°
50°
15
65°
46°
16
60°
42°
17
62°
41°
18
68°
41°
19
71°
43°
20
74°
49°
21
74°
47°
22
80°
47°
23
85°
51°
24
83°
53°
25
87°
52°
26
54°
49°
27
77°
55°
28
86°
56°
29
75°
49°
30
61°
45°
31
69°
41°
1
74°
44°
2
85°
51°
3
80°
48°
4
79°
50°
5
78°
49°
6
76°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Eugene
Eugene's May 2026 forecast shows daily high temperatures ranging from 54° to 86°, with overnight lows between 41° and 56°. The average high for May is 75° 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 May weather will actually feel in Eugene. See also: June | July | August.
