S
M
T
W
T
F
S
26
64°
38°
27
66°
51°
28
63°
38°
29
58°
35°
30
54°
34°
1
47°
30°
2
53°
33°
3
55°
32°
4
56°
36°
5
60°
38°
6
57°
37°
7
58°
36°
8
57°
34°
9
58°
34°
10
58°
37°
11
59°
43°
12
59°
45°
13
60°
45°
14
60°
42°
15
59°
39°
16
59°
38°
17
60°
37°
18
60°
37°
19
61°
38°
20
62°
37°
21
63°
41°
22
64°
48°
23
65°
42°
24
63°
40°
25
63°
40°
26
64°
41°
27
65°
45°
28
66°
48°
29
67°
50°
30
67°
51°
31
68°
51°
1
71°
50°
2
75°
51°
3
77°
52°
4
76°
52°
5
75°
45°
6
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harrison
Harrison's May 2026 forecast shows daily high temperatures ranging from 47° to 77°, with overnight lows between 30° and 53°. The average high for May is 62° with an average low of 42°. 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 Harrison. See also: June | July | August.