S
M
T
W
T
F
S
26
88°
56°
27
90°
57°
28
89°
59°
29
93°
59°
30
95°
60°
31
95°
61°
1
94°
59°
2
91°
59°
3
90°
58°
4
91°
57°
5
89°
57°
6
90°
58°
7
88°
56°
8
88°
56°
9
89°
57°
10
88°
57°
11
88°
56°
12
93°
56°
13
93°
58°
14
93°
60°
15
94°
60°
16
94°
59°
17
93°
60°
18
95°
60°
19
94°
59°
20
94°
60°
21
93°
60°
22
94°
58°
23
91°
61°
24
94°
60°
25
95°
60°
26
94°
59°
27
94°
61°
28
93°
60°
29
91°
56°
30
88°
57°
31
88°
61°
1
90°
62°
2
94°
62°
3
93°
59°
4
87°
60°
5
87°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Walnut Grove
Walnut Grove's August 2026 forecast shows daily high temperatures ranging from 87° to 95°, with overnight lows between 56° and 62°. The average high for August is 92° with an average low of 59°. 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 Walnut Grove. See also: September | October | November.