S
M
T
W
T
F
S
26
64°
46°
27
64°
37°
28
71°
28°
29
79°
30°
30
76°
33°
1
86°
39°
2
87°
41°
3
83°
44°
4
77°
48°
5
67°
47°
6
76°
32°
7
87°
39°
8
89°
42°
9
89°
37°
10
94°
38°
11
99°
54°
12
96°
45°
13
79°
39°
14
78°
42°
15
77°
38°
16
76°
49°
17
68°
49°
18
75°
47°
19
81°
50°
20
83°
49°
21
78°
48°
22
77°
51°
23
76°
50°
24
75°
50°
25
76°
49°
26
74°
48°
27
76°
49°
28
76°
48°
29
77°
47°
30
78°
47°
31
82°
48°
1
84°
50°
2
84°
51°
3
83°
51°
4
84°
50°
5
84°
51°
6
83°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tecate
Tecate's May 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 47° and 51°. The average high for May is 79° with an average low of 49°. 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 Tecate. See also: June | July | August.