S
M
T
W
T
F
S
26
68°
55°
27
78°
53°
28
73°
46°
29
70°
41°
30
71°
41°
1
74°
44°
2
76°
43°
3
90°
41°
4
90°
60°
5
70°
48°
6
63°
45°
7
84°
45°
8
87°
51°
9
92°
45°
10
77°
48°
11
83°
40°
12
97°
55°
13
87°
65°
14
101°
65°
15
99°
67°
16
99°
68°
17
98°
73°
18
98°
57°
19
72°
51°
20
69°
51°
21
73°
57°
22
82°
64°
23
79°
59°
24
87°
61°
25
89°
62°
26
85°
60°
27
80°
63°
28
78°
62°
29
82°
63°
30
83°
62°
31
73°
58°
1
82°
63°
2
83°
59°
3
80°
60°
4
82°
62°
5
85°
62°
6
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harper
Harper's May 2026 forecast shows daily high temperatures ranging from 73° to 89°, with overnight lows between 58° and 67°. The average high for May is 82° with an average low of 62°. 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 Harper. See also: June | July | August.
