S
M
T
W
T
F
S
26
88°
52°
27
91°
51°
28
90°
58°
29
89°
60°
30
93°
56°
31
100°
51°
1
88°
57°
2
79°
48°
3
80°
50°
4
89°
43°
5
94°
43°
6
96°
46°
7
99°
50°
8
95°
51°
9
93°
46°
10
90°
46°
11
92°
45°
12
88°
55°
13
87°
61°
14
86°
57°
15
89°
54°
16
88°
53°
17
94°
53°
18
94°
51°
19
95°
44°
20
98°
48°
21
102°
54°
22
97°
63°
23
86°
50°
24
89°
41°
25
98°
51°
26
99°
52°
27
90°
65°
28
87°
49°
29
75°
51°
30
76°
38°
31
88°
39°
1
83°
49°
2
75°
53°
3
63°
42°
4
65°
37°
5
69°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in La Grande
La Grande's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 La Grande. See also: September | October | November.
