S
M
T
W
T
F
S
26
82°
63°
27
90°
64°
28
84°
59°
29
72°
55°
30
70°
48°
1
72°
46°
2
73°
43°
3
84°
43°
4
81°
54°
5
79°
54°
6
64°
46°
7
72°
43°
8
81°
48°
9
84°
55°
10
73°
57°
11
77°
54°
12
81°
50°
13
84°
55°
14
82°
57°
15
81°
64°
16
86°
72°
17
88°
72°
18
88°
77°
19
79°
64°
20
77°
63°
21
79°
64°
22
79°
66°
23
77°
63°
24
84°
63°
25
86°
63°
26
86°
64°
27
N/A
28
81°
67°
29
85°
68°
30
87°
71°
31
90°
70°
1
93°
66°
2
88°
64°
3
88°
63°
4
83°
64°
5
83°
67°
6
85°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Harrison
Harrison's May 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 63° and 71°. The average high for May is 86° with an average low of 67°. 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.