S
M
T
W
T
F
S
26
65°
44°
27
61°
46°
28
59°
46°
29
58°
44°
30
57°
47°
1
59°
44°
2
60°
40°
3
59°
41°
4
64°
49°
5
65°
47°
6
61°
47°
7
61°
46°
8
65°
44°
9
62°
46°
10
62°
52°
11
70°
48°
12
62°
45°
13
63°
52°
14
72°
53°
15
65°
48°
16
64°
48°
17
65°
51°
18
71°
55°
19
73°
50°
20
73°
47°
21
63°
46°
22
65°
50°
23
66°
48°
24
70°
55°
25
75°
57°
26
76°
54°
27
67°
53°
28
68°
57°
29
68°
54°
30
69°
54°
31
68°
57°
1
77°
58°
2
76°
58°
3
76°
58°
4
77°
59°
5
78°
57°
6
77°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Purchase
Purchase's May 2026 forecast shows daily high temperatures ranging from 57° to 78°, with overnight lows between 40° and 59°. The average high for May is 67° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Purchase. See also: June | July | August.
