S
M
T
W
T
F
S
26
74°
36°
27
75°
35°
28
76°
35°
29
75°
37°
30
76°
44°
1
N/A
2
70°
50°
3
70°
57°
4
63°
42°
5
62°
37°
6
64°
42°
7
55°
37°
8
55°
35°
9
59°
35°
10
63°
38°
11
62°
41°
12
63°
41°
13
64°
42°
14
60°
38°
15
62°
36°
16
60°
40°
17
60°
40°
18
61°
42°
19
61°
42°
20
60°
43°
21
62°
42°
22
62°
42°
23
61°
40°
24
58°
34°
25
54°
33°
26
55°
33°
27
58°
34°
28
57°
40°
29
59°
40°
30
56°
39°
31
57°
40°
1
54°
39°
2
53°
39°
3
52°
38°
4
52°
36°
5
53°
32°
6
55°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Palmerston
Palmerston's May 2026 forecast shows daily high temperatures ranging from 52° to 70°, with overnight lows between 32° and 57°. The average high for May is 59° with an average low of 39°. 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 Palmerston. See also: June | July | August.