S
M
T
W
T
F
S
26
74°
59°
27
79°
59°
28
73°
58°
29
75°
56°
30
79°
54°
31
84°
56°
1
72°
58°
2
71°
56°
3
76°
53°
4
83°
60°
5
87°
61°
6
89°
61°
7
84°
60°
8
79°
56°
9
76°
57°
10
78°
58°
11
77°
57°
12
78°
58°
13
78°
58°
14
75°
57°
15
78°
58°
16
77°
56°
17
78°
57°
18
79°
60°
19
79°
58°
20
77°
57°
21
74°
59°
22
72°
56°
23
75°
60°
24
71°
52°
25
76°
57°
26
79°
60°
27
79°
60°
28
78°
59°
29
73°
58°
30
70°
52°
31
73°
57°
1
69°
56°
2
69°
52°
3
70°
51°
4
72°
56°
5
68°
52°
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 68° to 89°, with overnight lows between 51° and 61°. The average high for August is 76° with an average low of 57°. 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.
