S
M
T
W
T
F
S
26
64°
45°
27
66°
43°
28
70°
45°
29
76°
47°
30
77°
46°
1
66°
52°
2
72°
50°
3
63°
50°
4
64°
51°
5
71°
52°
6
75°
50°
7
80°
50°
8
76°
51°
9
80°
45°
10
74°
53°
11
87°
49°
12
78°
50°
13
71°
51°
14
73°
47°
15
68°
52°
16
63°
50°
17
65°
49°
18
77°
44°
19
83°
43°
20
81°
46°
21
90°
48°
22
86°
53°
23
73°
54°
24
73°
48°
25
68°
44°
26
61°
42°
27
69°
46°
28
70°
45°
29
70°
42°
30
67°
38°
31
68°
39°
1
71°
40°
2
73°
42°
3
73°
43°
4
72°
42°
5
75°
46°
6
77°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harris
Harris's May 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 38° and 54°. The average high for May is 71° with an average low of 44°. 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 Harris. See also: June | July | August.