S
M
T
W
T
F
S
28
68°
52°
29
64°
54°
30
64°
52°
1
66°
48°
2
72°
52°
3
77°
55°
4
75°
54°
5
77°
52°
6
86°
50°
7
80°
53°
8
75°
48°
9
77°
51°
10
74°
52°
11
75°
49°
12
75°
46°
13
79°
50°
14
84°
51°
15
85°
50°
16
80°
50°
17
77°
51°
18
79°
49°
19
80°
51°
20
76°
50°
21
76°
51°
22
78°
53°
23
79°
55°
24
80°
55°
25
79°
50°
26
77°
50°
27
79°
51°
28
79°
51°
29
74°
53°
30
74°
50°
31
79°
53°
1
78°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in La Grande
La Grande's July 2026 forecast shows daily high temperatures ranging from 74° to 85°, with overnight lows between 46° and 55°. The average high for July is 78° 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 July weather will actually feel in La Grande. See also: August | September | October.