S
M
T
W
T
F
S
26
67°
27°
27
74°
29°
28
66°
32°
29
63°
42°
30
50°
43°
1
60°
29°
2
49°
30°
3
53°
32°
4
72°
31°
5
82°
53°
6
67°
45°
7
65°
35°
8
58°
35°
9
59°
43°
10
64°
45°
11
63°
40°
12
61°
38°
13
57°
41°
14
63°
42°
15
61°
43°
16
61°
42°
17
66°
45°
18
65°
43°
19
70°
47°
20
69°
48°
21
69°
48°
22
68°
49°
23
63°
45°
24
61°
44°
25
63°
44°
26
63°
49°
27
64°
46°
28
63°
44°
29
63°
43°
30
64°
47°
31
65°
51°
1
67°
47°
2
65°
45°
3
67°
52°
4
72°
52°
5
68°
51°
6
70°
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 57° to 82°, with overnight lows between 35° and 53°. The average high for May is 65° with an average low of 45°. 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.