S
M
T
W
T
F
S
26
92°
63°
27
93°
61°
28
93°
61°
29
91°
59°
30
92°
60°
31
91°
56°
1
91°
54°
2
88°
53°
3
87°
57°
4
93°
61°
5
95°
60°
6
95°
61°
7
94°
61°
8
95°
58°
9
95°
59°
10
94°
55°
11
93°
48°
12
84°
49°
13
83°
48°
14
83°
48°
15
84°
51°
16
87°
58°
17
93°
57°
18
94°
57°
19
93°
56°
20
93°
57°
21
92°
53°
22
87°
52°
23
81°
47°
24
80°
48°
25
82°
47°
26
80°
43°
27
77°
44°
28
78°
46°
29
78°
48°
30
79°
47°
31
81°
49°
1
84°
51°
2
85°
54°
3
87°
54°
4
90°
55°
5
89°
48°
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 77° to 95°, with overnight lows between 43° and 63°. The average high for August is 88° with an average low of 54°. 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.
