S
M
T
W
T
F
S
26
90°
80°
27
89°
78°
28
90°
79°
29
91°
81°
30
91°
80°
31
90°
79°
1
90°
79°
2
90°
80°
3
90°
79°
4
90°
79°
5
91°
77°
6
89°
79°
7
91°
80°
8
91°
79°
9
91°
79°
10
91°
81°
11
90°
80°
12
90°
81°
13
92°
81°
14
93°
80°
15
94°
83°
16
92°
81°
17
91°
80°
18
91°
79°
19
90°
82°
20
91°
81°
21
91°
81°
22
90°
80°
23
91°
81°
24
92°
80°
25
92°
81°
26
92°
80°
27
91°
81°
28
92°
81°
29
92°
80°
30
89°
79°
31
89°
79°
1
90°
79°
2
91°
78°
3
90°
78°
4
89°
77°
5
90°
78°
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 89° to 92°, with overnight lows between 77° and 81°. The average high for August is 90° with an average low of 79°. 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.
