S
M
T
W
T
F
S
26
80°
61°
27
75°
63°
28
82°
64°
29
80°
64°
30
82°
63°
31
83°
65°
1
83°
64°
2
81°
65°
3
82°
64°
4
80°
63°
5
81°
64°
6
82°
64°
7
82°
62°
8
74°
59°
9
75°
62°
10
77°
63°
11
78°
63°
12
77°
64°
13
82°
65°
14
83°
63°
15
81°
62°
16
76°
60°
17
78°
61°
18
76°
62°
19
83°
60°
20
81°
61°
21
82°
57°
22
80°
54°
23
73°
52°
24
74°
52°
25
77°
53°
26
79°
52°
27
78°
54°
28
79°
59°
29
80°
58°
30
76°
58°
31
79°
57°
1
78°
58°
2
79°
50°
3
76°
47°
4
70°
54°
5
71°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Bellevue
Bellevue's August 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 47° and 65°. The average high for August is 79° with an average low of 60°. 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 Bellevue. See also: September | October | November.
