S
M
T
W
T
F
S
26
60°
31°
27
62°
32°
28
67°
31°
29
71°
46°
30
71°
37°
1
76°
36°
2
80°
47°
3
84°
52°
4
84°
51°
5
82°
48°
6
88°
50°
7
86°
52°
8
82°
52°
9
81°
48°
10
82°
46°
11
87°
50°
12
83°
49°
13
82°
50°
14
81°
48°
15
74°
43°
16
74°
50°
17
79°
48°
18
69°
42°
19
67°
41°
20
71°
46°
21
79°
52°
22
81°
53°
23
76°
51°
24
80°
52°
25
82°
52°
26
81°
52°
27
81°
52°
28
77°
53°
29
78°
53°
30
82°
54°
31
83°
55°
1
84°
55°
2
85°
56°
3
85°
56°
4
84°
55°
5
84°
55°
6
85°
54°
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 67° to 88°, with overnight lows between 41° and 56°. The average high for May is 81° with an average low of 51°. 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.
