S
M
T
W
T
F
S
26
65°
40°
27
67°
52°
28
63°
50°
29
56°
36°
30
56°
33°
1
47°
34°
2
53°
41°
3
61°
47°
4
74°
50°
5
55°
41°
6
53°
39°
7
52°
39°
8
60°
47°
9
62°
44°
10
62°
48°
11
64°
51°
12
64°
50°
13
62°
48°
14
70°
50°
15
63°
48°
16
64°
47°
17
65°
55°
18
72°
55°
19
66°
54°
20
70°
56°
21
74°
56°
22
70°
55°
23
74°
52°
24
66°
50°
25
66°
53°
26
69°
58°
27
72°
56°
28
69°
55°
29
69°
51°
30
71°
50°
31
70°
50°
1
69°
56°
2
79°
55°
3
70°
54°
4
71°
52°
5
71°
52°
6
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harvey
Harvey's May 2026 forecast shows daily high temperatures ranging from 47° to 79°, with overnight lows between 34° and 58°. The average high for May is 66° 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 Harvey. See also: June | July | August.
