S
M
T
W
T
F
S
26
93°
56°
27
92°
58°
28
91°
61°
29
91°
60°
30
90°
59°
31
98°
56°
1
90°
61°
2
87°
57°
3
97°
52°
4
104°
57°
5
105°
62°
6
106°
66°
7
105°
64°
8
100°
62°
9
98°
58°
10
97°
55°
11
94°
57°
12
87°
51°
13
86°
54°
14
89°
54°
15
89°
54°
16
90°
55°
17
91°
54°
18
88°
53°
19
83°
50°
20
84°
49°
21
90°
52°
22
92°
51°
23
92°
50°
24
93°
52°
25
88°
48°
26
90°
52°
27
87°
51°
28
81°
45°
29
81°
46°
30
85°
50°
31
88°
51°
1
87°
51°
2
87°
50°
3
86°
49°
4
85°
49°
5
81°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Prospect
Prospect's August 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 45° and 55°. The average high for August is 87° with an average low of 51°. 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 Prospect. See also: September | October | November.