S
M
T
W
T
F
S
26
57°
33°
27
56°
34°
28
57°
35°
29
56°
37°
30
51°
36°
1
52°
35°
2
51°
34°
3
51°
33°
4
52°
31°
5
54°
31°
6
57°
32°
7
64°
37°
8
64°
40°
9
60°
39°
10
65°
40°
11
58°
36°
12
56°
35°
13
58°
36°
14
56°
35°
15
58°
35°
16
59°
41°
17
60°
38°
18
61°
41°
19
59°
40°
20
63°
39°
21
68°
44°
22
70°
43°
23
71°
46°
24
69°
47°
25
72°
45°
26
68°
42°
27
65°
47°
28
65°
48°
29
72°
46°
30
72°
37°
31
70°
39°
1
71°
46°
2
75°
49°
3
76°
51°
4
77°
51°
5
77°
50°
6
76°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Blaine
Blaine's May 2026 forecast shows daily high temperatures ranging from 51° to 77°, with overnight lows between 31° and 51°. The average high for May is 63° with an average low of 40°. 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 Blaine. See also: June | July | August.