S
M
T
W
T
F
S
26
90°
72°
27
89°
72°
28
89°
71°
29
88°
72°
30
86°
71°
31
86°
71°
1
83°
70°
2
84°
71°
3
84°
72°
4
85°
68°
5
84°
66°
6
83°
65°
7
84°
66°
8
85°
71°
9
82°
71°
10
83°
70°
11
83°
69°
12
84°
67°
13
84°
68°
14
85°
69°
15
84°
71°
16
87°
72°
17
89°
71°
18
89°
71°
19
88°
70°
20
88°
71°
21
84°
62°
22
82°
61°
23
82°
64°
24
83°
63°
25
84°
64°
26
89°
69°
27
90°
69°
28
90°
68°
29
85°
69°
30
90°
63°
31
88°
63°
1
85°
67°
2
89°
66°
3
89°
66°
4
88°
67°
5
90°
67°
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 82° to 90°, with overnight lows between 61° and 72°. The average high for August is 86° with an average low of 68°. 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.
