S
M
T
W
T
F
S
26
96°
67°
27
97°
67°
28
98°
66°
29
99°
67°
30
99°
68°
31
98°
67°
1
93°
63°
2
92°
63°
3
95°
65°
4
93°
64°
5
92°
64°
6
96°
65°
7
95°
65°
8
91°
65°
9
94°
65°
10
97°
66°
11
99°
65°
12
98°
61°
13
95°
60°
14
94°
61°
15
95°
61°
16
95°
63°
17
94°
65°
18
98°
65°
19
99°
64°
20
97°
61°
21
95°
58°
22
92°
58°
23
90°
57°
24
90°
61°
25
91°
59°
26
95°
61°
27
95°
63°
28
97°
64°
29
97°
62°
30
95°
63°
31
96°
61°
1
95°
60°
2
93°
60°
3
93°
61°
4
94°
63°
5
95°
65°
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 90° to 99°, with overnight lows between 57° and 68°. The average high for August is 95° with an average low of 63°. 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.