S
M
T
W
T
F
S
26
75°
61°
27
77°
58°
28
80°
58°
29
80°
56°
30
75°
55°
31
79°
56°
1
78°
55°
2
76°
54°
3
75°
55°
4
75°
53°
5
76°
54°
6
77°
55°
7
77°
55°
8
79°
60°
9
80°
55°
10
76°
58°
11
81°
62°
12
82°
62°
13
80°
59°
14
81°
54°
15
76°
53°
16
74°
58°
17
74°
59°
18
73°
54°
19
73°
51°
20
72°
60°
21
74°
61°
22
80°
59°
23
81°
60°
24
80°
55°
25
79°
51°
26
77°
52°
27
72°
56°
28
72°
57°
29
74°
59°
30
78°
59°
31
79°
58°
1
79°
52°
2
77°
51°
3
78°
51°
4
71°
54°
5
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Westby
Westby's August 2026 forecast shows daily high temperatures ranging from 71° to 82°, with overnight lows between 51° and 62°. The average high for August is 77° with an average low of 56°. 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 Westby. See also: September | October | November.