S
M
T
W
T
F
S
26
70°
34°
27
59°
43°
28
59°
48°
29
68°
46°
30
77°
43°
1
75°
46°
2
75°
50°
3
82°
50°
4
81°
50°
5
68°
52°
6
63°
52°
7
66°
46°
8
64°
46°
9
70°
46°
10
68°
46°
11
73°
50°
12
82°
46°
13
57°
50°
14
61°
48°
15
52°
45°
16
59°
41°
17
63°
36°
18
68°
43°
19
64°
48°
20
68°
48°
21
77°
43°
22
79°
46°
23
70°
50°
24
75°
45°
25
63°
48°
26
60°
43°
27
74°
53°
28
80°
50°
29
58°
41°
30
59°
37°
31
65°
36°
1
75°
43°
2
86°
46°
3
75°
44°
4
72°
44°
5
67°
43°
6
65°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in National
National's May 2026 forecast shows daily high temperatures ranging from 58° to 86°, with overnight lows between 36° and 53°. The average high for May is 70° with an average low of 44°. 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 National. See also: June | July | August.
