S
M
T
W
T
F
S
26
105°
78°
27
99°
78°
28
97°
76°
29
92°
77°
30
88°
71°
31
82°
67°
1
87°
64°
2
88°
60°
3
89°
63°
4
80°
63°
5
76°
62°
6
82°
63°
7
91°
64°
8
83°
65°
9
90°
76°
10
92°
72°
11
95°
74°
12
91°
73°
13
89°
73°
14
85°
74°
15
87°
74°
16
82°
66°
17
86°
61°
18
86°
70°
19
81°
68°
20
86°
62°
21
86°
67°
22
86°
66°
23
77°
63°
24
80°
66°
25
85°
65°
26
87°
66°
27
85°
61°
28
87°
64°
29
94°
68°
30
94°
73°
31
92°
71°
1
98°
70°
2
99°
71°
3
98°
76°
4
98°
71°
5
95°
73°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.