S
M
T
W
T
F
S
26
92°
77°
27
92°
77°
28
96°
80°
29
96°
76°
30
94°
78°
1
87°
60°
2
75°
59°
3
82°
64°
4
86°
71°
5
94°
78°
6
95°
79°
7
90°
75°
8
85°
76°
9
90°
73°
10
95°
74°
11
95°
75°
12
93°
76°
13
94°
74°
14
92°
73°
15
94°
77°
16
93°
77°
17
95°
76°
18
95°
77°
19
94°
77°
20
94°
76°
21
91°
77°
22
94°
78°
23
94°
78°
24
95°
77°
25
91°
78°
26
95°
75°
27
91°
76°
28
93°
78°
29
94°
78°
30
95°
77°
31
93°
77°
1
93°
76°
2
95°
75°
3
97°
78°
4
98°
79°
5
96°
78°
6
94°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mcallen-Pharr
Mcallen-Pharr's May 2026 forecast shows daily high temperatures ranging from 75° to 98°, with overnight lows between 59° and 79°. The average high for May is 92° with an average low of 75°. 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 Mcallen-Pharr. See also: June | July | August.
