S
M
T
W
T
F
S
26
64°
43°
27
60°
41°
28
59°
41°
29
59°
42°
30
60°
41°
1
60°
41°
2
61°
42°
3
59°
45°
4
59°
42°
5
60°
41°
6
59°
45°
7
63°
44°
8
63°
45°
9
62°
46°
10
63°
44°
11
62°
44°
12
62°
46°
13
61°
42°
14
57°
42°
15
58°
44°
16
60°
43°
17
58°
40°
18
57°
43°
19
59°
42°
20
56°
42°
21
58°
38°
22
61°
39°
23
58°
36°
24
60°
35°
25
57°
38°
26
57°
36°
27
58°
37°
28
57°
36°
29
58°
35°
30
56°
35°
31
56°
36°
1
57°
37°
2
56°
37°
3
56°
38°
4
57°
39°
5
56°
36°
6
57°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Blenheim
Blenheim's May 2026 forecast shows daily high temperatures ranging from 56° to 64°, with overnight lows between 35° and 46°. The average high for May is 59° 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 Blenheim. See also: June | July | August.
