S
M
T
W
T
F
S
26
59°
42°
27
73°
38°
28
72°
51°
29
63°
46°
30
51°
36°
1
51°
31°
2
45°
31°
3
59°
27°
4
73°
45°
5
73°
57°
6
57°
45°
7
60°
35°
8
63°
39°
9
67°
47°
10
63°
43°
11
62°
34°
12
68°
35°
13
70°
47°
14
52°
42°
15
66°
38°
16
70°
47°
17
84°
56°
18
91°
67°
19
89°
62°
20
69°
44°
21
68°
49°
22
63°
56°
23
69°
58°
24
74°
55°
25
73°
55°
26
77°
54°
27
75°
56°
28
76°
56°
29
77°
54°
30
77°
55°
31
79°
50°
1
74°
55°
2
75°
56°
3
76°
55°
4
72°
54°
5
71°
52°
6
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Prospect
Prospect's May 2026 forecast shows daily high temperatures ranging from 63° to 91°, with overnight lows between 44° and 67°. The average high for May is 75° with an average low of 55°. 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 Prospect. See also: June | July | August.
