S
M
T
W
T
F
S
26
77°
59°
27
70°
54°
28
66°
50°
29
81°
59°
30
73°
61°
1
64°
54°
2
63°
50°
3
68°
39°
4
77°
45°
5
79°
52°
6
81°
61°
7
79°
55°
8
70°
46°
9
72°
54°
10
81°
54°
11
77°
59°
12
72°
52°
13
79°
43°
14
77°
54°
15
75°
41°
16
82°
52°
17
88°
64°
18
88°
63°
19
88°
61°
20
90°
64°
21
90°
68°
22
81°
63°
23
68°
63°
24
77°
61°
25
79°
68°
26
79°
68°
27
82°
67°
28
87°
67°
29
81°
67°
30
72°
58°
31
68°
54°
1
73°
60°
2
74°
58°
3
78°
60°
4
79°
64°
5
80°
63°
6
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Joanna
Joanna's May 2026 forecast shows daily high temperatures ranging from 68° to 87°, with overnight lows between 54° and 68°. The average high for May is 78° with an average low of 63°. 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 Joanna. See also: June | July | August.