S
M
T
W
T
F
S
26
57°
39°
27
72°
36°
28
58°
50°
29
56°
50°
30
58°
40°
1
64°
40°
2
55°
35°
3
57°
42°
4
70°
51°
5
77°
56°
6
62°
49°
7
56°
41°
8
54°
39°
9
57°
43°
10
64°
49°
11
62°
48°
12
63°
50°
13
65°
48°
14
64°
51°
15
65°
52°
16
64°
51°
17
64°
51°
18
65°
55°
19
74°
55°
20
74°
54°
21
75°
56°
22
75°
56°
23
74°
55°
24
75°
55°
25
69°
51°
26
68°
56°
27
68°
57°
28
76°
58°
29
74°
57°
30
73°
56°
31
73°
56°
1
71°
51°
2
68°
51°
3
68°
50°
4
69°
50°
5
69°
51°
6
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Blain
Blain's May 2026 forecast shows daily high temperatures ranging from 54° to 77°, with overnight lows between 35° and 58°. The average high for May is 67° 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 Blain. See also: June | July | August.