S
M
T
W
T
F
S
26
88°
65°
27
89°
66°
28
90°
69°
29
88°
69°
30
90°
68°
31
90°
69°
1
87°
69°
2
85°
68°
3
88°
69°
4
85°
69°
5
86°
68°
6
85°
67°
7
85°
67°
8
86°
66°
9
88°
69°
10
84°
68°
11
85°
67°
12
84°
65°
13
84°
65°
14
85°
64°
15
86°
66°
16
87°
69°
17
88°
68°
18
85°
68°
19
86°
67°
20
85°
66°
21
87°
61°
22
83°
60°
23
82°
60°
24
83°
63°
25
84°
62°
26
85°
65°
27
88°
63°
28
88°
66°
29
87°
65°
30
87°
66°
31
88°
64°
1
82°
61°
2
83°
63°
3
87°
61°
4
88°
65°
5
88°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Westminster
Westminster's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 60° and 69°. The average high for August is 86° with an average low of 66°. 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 Westminster. See also: September | October | November.
