S
M
T
W
T
F
S
26
84°
73°
27
86°
77°
28
86°
75°
29
84°
73°
30
90°
68°
1
65°
55°
2
77°
56°
3
79°
63°
4
80°
71°
5
83°
74°
6
84°
64°
7
79°
62°
8
77°
64°
9
80°
70°
10
82°
70°
11
84°
71°
12
85°
69°
13
84°
69°
14
85°
67°
15
84°
71°
16
82°
70°
17
84°
71°
18
85°
71°
19
85°
72°
20
83°
72°
21
83°
71°
22
80°
69°
23
82°
72°
24
83°
72°
25
81°
71°
26
82°
69°
27
84°
67°
28
83°
70°
29
84°
72°
30
85°
71°
31
87°
71°
1
86°
69°
2
86°
70°
3
87°
71°
4
87°
73°
5
89°
74°
6
87°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Baytown
Baytown's May 2026 forecast shows daily high temperatures ranging from 65° to 89°, with overnight lows between 55° and 74°. The average high for May is 83° with an average low of 69°. 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 Baytown. See also: June | July | August.