S
M
T
W
T
F
S
28
68°
54°
29
64°
52°
30
64°
50°
1
71°
52°
2
72°
55°
3
78°
52°
4
80°
51°
5
81°
51°
6
85°
53°
7
79°
55°
8
81°
54°
9
80°
53°
10
81°
54°
11
81°
54°
12
82°
56°
13
84°
55°
14
86°
57°
15
82°
54°
16
76°
56°
17
75°
51°
18
81°
54°
19
84°
55°
20
84°
54°
21
82°
56°
22
78°
55°
23
78°
56°
24
79°
56°
25
81°
55°
26
84°
58°
27
84°
57°
28
86°
56°
29
83°
53°
30
86°
57°
31
87°
59°
1
84°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Forest Grove-Cornelius
Forest Grove-Cornelius's July 2026 forecast shows daily high temperatures ranging from 72° to 87°, with overnight lows between 51° and 59°. The average high for July is 81° 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 July weather will actually feel in Forest Grove-Cornelius. See also: August | September | October.