S
M
T
W
T
F
S
26
62°
44°
27
74°
43°
28
69°
51°
29
58°
46°
30
56°
40°
1
49°
39°
2
45°
32°
3
61°
31°
4
74°
47°
5
68°
46°
6
58°
41°
7
59°
39°
8
65°
43°
9
72°
53°
10
67°
45°
11
69°
38°
12
69°
56°
13
61°
44°
14
63°
43°
15
66°
54°
16
81°
56°
17
78°
61°
18
82°
61°
19
70°
51°
20
71°
54°
21
75°
54°
22
76°
57°
23
74°
58°
24
77°
59°
25
78°
52°
26
78°
58°
27
79°
59°
28
79°
59°
29
80°
58°
30
78°
58°
31
78°
57°
1
72°
55°
2
71°
54°
3
74°
59°
4
80°
60°
5
76°
59°
6
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Harpster
Harpster's May 2026 forecast shows daily high temperatures ranging from 61° to 82°, with overnight lows between 43° and 61°. The average high for May is 75° with an average low of 56°. 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 Harpster. See also: June | July | August.