S
M
T
W
T
F
S
26
77°
59°
27
78°
58°
28
82°
62°
29
75°
59°
30
73°
57°
31
72°
57°
1
72°
60°
2
73°
56°
3
75°
58°
4
73°
57°
5
75°
58°
6
80°
63°
7
78°
62°
8
80°
62°
9
81°
63°
10
82°
63°
11
81°
62°
12
82°
63°
13
83°
63°
14
81°
62°
15
80°
62°
16
81°
63°
17
81°
63°
18
80°
62°
19
82°
63°
20
82°
63°
21
81°
62°
22
81°
62°
23
80°
63°
24
78°
54°
25
75°
61°
26
78°
61°
27
79°
62°
28
82°
61°
29
81°
57°
30
81°
62°
31
80°
61°
1
79°
57°
2
79°
54°
3
78°
53°
4
79°
53°
5
78°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Pioneer Square
Pioneer Square's August 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 52° and 63°. The average high for August is 79° with an average low of 60°. 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 Pioneer Square. See also: September | October | November.
