S
M
T
W
T
F
S
26
87°
56°
27
90°
59°
28
93°
61°
29
92°
59°
30
94°
60°
31
95°
61°
1
92°
58°
2
94°
60°
3
93°
56°
4
87°
54°
5
87°
54°
6
86°
55°
7
91°
59°
8
93°
58°
9
91°
58°
10
91°
57°
11
88°
54°
12
87°
53°
13
86°
52°
14
91°
56°
15
92°
58°
16
93°
58°
17
94°
56°
18
95°
55°
19
94°
57°
20
92°
59°
21
90°
59°
22
95°
50°
23
93°
51°
24
88°
51°
25
89°
50°
26
87°
50°
27
87°
49°
28
88°
49°
29
85°
50°
30
84°
48°
31
85°
49°
1
86°
51°
2
91°
55°
3
89°
55°
4
82°
53°
5
84°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grants Pass
Grants Pass's August 2026 forecast shows daily high temperatures ranging from 82° to 95°, with overnight lows between 48° and 61°. The average high for August is 90° with an average low of 55°. 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 Grants Pass. See also: September | October | November.