S
M
T
W
T
F
S
26
81°
64°
27
81°
67°
28
78°
68°
29
80°
64°
30
81°
65°
31
84°
66°
1
83°
68°
2
84°
66°
3
81°
67°
4
85°
69°
5
86°
68°
6
84°
69°
7
87°
72°
8
81°
67°
9
84°
68°
10
80°
68°
11
81°
68°
12
79°
67°
13
79°
68°
14
82°
67°
15
80°
64°
16
78°
65°
17
78°
64°
18
77°
63°
19
80°
67°
20
79°
66°
21
77°
65°
22
77°
65°
23
78°
66°
24
83°
60°
25
75°
59°
26
75°
66°
27
81°
67°
28
83°
67°
29
83°
66°
30
81°
62°
31
76°
58°
1
74°
58°
2
73°
57°
3
73°
57°
4
74°
58°
5
75°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Purchase
Purchase's August 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 57° and 72°. The average high for August is 80° with an average low of 65°. 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 Purchase. See also: September | October | November.
