S
M
T
W
T
F
S
28
72°
54°
29
67°
55°
30
68°
55°
1
72°
54°
2
76°
49°
3
80°
53°
4
79°
54°
5
83°
54°
6
86°
56°
7
81°
52°
8
71°
46°
9
76°
45°
10
75°
46°
11
73°
47°
12
76°
50°
13
82°
51°
14
85°
52°
15
90°
53°
16
77°
47°
17
71°
45°
18
76°
51°
19
80°
51°
20
80°
50°
21
77°
51°
22
73°
51°
23
72°
47°
24
72°
48°
25
74°
50°
26
75°
50°
27
78°
52°
28
81°
51°
29
78°
50°
30
81°
51°
31
82°
51°
1
77°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Cascadia
Cascadia's July 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 45° and 56°. The average high for July is 78° with an average low of 50°. 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 Cascadia. See also: August | September | October.