S
M
T
W
T
F
S
26
82°
62°
27
82°
61°
28
77°
61°
29
73°
60°
30
74°
62°
1
75°
62°
2
75°
61°
3
74°
62°
4
74°
62°
5
75°
63°
6
77°
63°
7
77°
64°
8
78°
64°
9
76°
63°
10
78°
64°
11
80°
65°
12
80°
65°
13
81°
64°
14
82°
66°
15
82°
64°
16
80°
60°
17
81°
64°
18
85°
66°
19
87°
62°
20
83°
64°
21
82°
66°
22
86°
68°
23
88°
67°
24
88°
69°
25
90°
69°
26
90°
68°
27
91°
69°
28
91°
70°
29
90°
70°
30
92°
69°
31
92°
71°
1
91°
71°
2
92°
70°
3
93°
71°
4
94°
72°
5
94°
72°
6
93°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Justin
Justin's May 2026 forecast shows daily high temperatures ranging from 73° to 94°, with overnight lows between 60° and 72°. The average high for May is 83° with an average low of 66°. 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 Justin. See also: June | July | August.