S
M
T
W
T
F
S
26
81°
55°
27
87°
47°
28
83°
53°
29
84°
50°
30
83°
52°
31
91°
45°
1
79°
52°
2
77°
48°
3
85°
47°
4
93°
51°
5
92°
51°
6
94°
51°
7
94°
54°
8
93°
53°
9
89°
54°
10
89°
55°
11
90°
58°
12
85°
56°
13
86°
54°
14
87°
55°
15
88°
56°
16
86°
55°
17
84°
56°
18
88°
56°
19
86°
55°
20
85°
55°
21
82°
52°
22
76°
48°
23
77°
54°
24
80°
54°
25
77°
53°
26
80°
54°
27
76°
52°
28
77°
50°
29
76°
52°
30
76°
51°
31
78°
52°
1
78°
54°
2
74°
47°
3
78°
52°
4
84°
53°
5
83°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Eugene
Eugene's August 2026 forecast shows daily high temperatures ranging from 74° to 93°, with overnight lows between 47° and 58°. The average high for August is 82° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Eugene. See also: September | October | November.