S
M
T
W
T
F
S
26
82°
68°
27
83°
68°
28
83°
67°
29
82°
68°
30
82°
68°
1
83°
67°
2
80°
67°
3
78°
68°
4
78°
68°
5
79°
67°
6
79°
69°
7
80°
69°
8
78°
68°
9
79°
69°
10
81°
69°
11
84°
68°
12
86°
70°
13
86°
70°
14
85°
71°
15
85°
71°
16
83°
66°
17
83°
69°
18
88°
68°
19
87°
69°
20
89°
70°
21
88°
69°
22
87°
68°
23
86°
70°
24
88°
71°
25
86°
73°
26
88°
72°
27
90°
71°
28
90°
72°
29
89°
71°
30
90°
69°
31
90°
70°
1
91°
70°
2
91°
71°
3
90°
73°
4
91°
73°
5
91°
75°
6
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Deer Park
Deer Park's May 2026 forecast shows daily high temperatures ranging from 78° to 91°, with overnight lows between 66° and 75°. The average high for May is 85° with an average low of 70°. 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 Deer Park. See also: June | July | August.