S
M
T
W
T
F
S
26
64°
46°
27
62°
39°
28
72°
42°
29
67°
48°
30
66°
46°
1
75°
49°
2
75°
48°
3
68°
47°
4
65°
43°
5
64°
45°
6
69°
46°
7
71°
45°
8
71°
46°
9
72°
45°
10
78°
46°
11
78°
47°
12
79°
48°
13
80°
48°
14
80°
49°
15
81°
49°
16
81°
48°
17
79°
47°
18
77°
44°
19
76°
44°
20
75°
45°
21
77°
45°
22
76°
46°
23
79°
49°
24
82°
50°
25
82°
50°
26
83°
49°
27
83°
51°
28
82°
51°
29
83°
50°
30
83°
50°
31
80°
48°
1
80°
46°
2
79°
46°
3
79°
44°
4
77°
44°
5
77°
45°
6
78°
44°
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 62° to 83°, with overnight lows between 39° and 51°. The average high for May is 76° with an average low of 47°. 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.