S
M
T
W
T
F
S
26
91°
56°
27
85°
50°
28
80°
52°
29
83°
48°
30
82°
53°
31
87°
48°
1
84°
49°
2
84°
52°
3
83°
45°
4
80°
53°
5
81°
55°
6
83°
53°
7
Hist. Avg.
88°
52°
8
Hist. Avg.
87°
52°
9
Hist. Avg.
87°
52°
10
Hist. Avg.
87°
51°
11
Hist. Avg.
87°
51°
12
Hist. Avg.
86°
51°
13
Hist. Avg.
86°
51°
14
Hist. Avg.
86°
51°
15
Hist. Avg.
86°
51°
16
Hist. Avg.
85°
50°
17
Hist. Avg.
85°
50°
18
Hist. Avg.
85°
50°
19
Hist. Avg.
84°
50°
20
Hist. Avg.
84°
50°
21
Hist. Avg.
84°
49°
22
Hist. Avg.
83°
49°
23
Hist. Avg.
83°
49°
24
Hist. Avg.
83°
49°
25
Hist. Avg.
82°
48°
26
Hist. Avg.
82°
48°
27
Hist. Avg.
82°
48°
28
Hist. Avg.
81°
48°
29
Hist. Avg.
81°
47°
30
Hist. Avg.
80°
47°
31
Hist. Avg.
80°
47°
1
Hist. Avg.
80°
46°
2
Hist. Avg.
79°
46°
3
Hist. Avg.
79°
46°
4
Hist. Avg.
78°
46°
5
Hist. Avg.
78°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Corvallis
Corvallis's August 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 45° and 56°. The average high for August is 84° with an average low of 51°. 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 Corvallis. See also: September | October | November.