S
M
T
W
T
F
S
26
88°
70°
27
89°
70°
28
88°
69°
29
88°
69°
30
90°
70°
31
88°
69°
1
83°
67°
2
82°
64°
3
82°
66°
4
83°
68°
5
82°
68°
6
83°
67°
7
83°
66°
8
84°
66°
9
84°
68°
10
85°
68°
11
85°
67°
12
86°
67°
13
87°
68°
14
91°
68°
15
91°
67°
16
89°
67°
17
83°
66°
18
86°
67°
19
84°
62°
20
84°
59°
21
81°
58°
22
80°
58°
23
82°
60°
24
82°
59°
25
83°
60°
26
82°
65°
27
85°
63°
28
86°
61°
29
83°
61°
30
85°
59°
31
81°
58°
1
79°
60°
2
81°
63°
3
80°
59°
4
80°
57°
5
82°
59°
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 79° to 91°, with overnight lows between 57° and 70°. The average high for August is 84° with an average low of 64°. 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.
