S
M
T
W
T
F
S
26
60°
31°
27
62°
32°
28
67°
31°
29
71°
46°
30
71°
37°
1
78°
44°
2
79°
48°
3
81°
52°
4
84°
51°
5
85°
52°
6
85°
51°
7
88°
52°
8
86°
56°
9
83°
52°
10
83°
51°
11
83°
50°
12
83°
49°
13
82°
50°
14
74°
44°
15
68°
43°
16
70°
46°
17
70°
48°
18
68°
48°
19
66°
47°
20
68°
43°
21
70°
46°
22
69°
44°
23
69°
43°
24
70°
46°
25
74°
48°
26
79°
52°
27
81°
52°
28
82°
53°
29
82°
53°
30
81°
54°
31
77°
53°
1
77°
52°
2
78°
54°
3
82°
55°
4
77°
54°
5
79°
55°
6
79°
55°
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 66° to 88°, with overnight lows between 43° and 56°. The average high for May is 78° with an average low of 50°. 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.
