S
M
T
W
T
F
S
26
66°
48°
27
67°
46°
28
77°
41°
29
80°
44°
30
78°
47°
1
82°
50°
2
85°
51°
3
71°
56°
4
68°
53°
5
68°
51°
6
78°
44°
7
84°
52°
8
85°
54°
9
89°
53°
10
91°
55°
11
96°
56°
12
91°
56°
13
84°
55°
14
83°
55°
15
79°
53°
16
80°
52°
17
78°
52°
18
79°
54°
19
78°
54°
20
81°
53°
21
75°
49°
22
75°
49°
23
76°
50°
24
80°
53°
25
84°
54°
26
82°
53°
27
79°
50°
28
77°
50°
29
77°
51°
30
81°
54°
31
83°
57°
1
85°
58°
2
86°
57°
3
82°
55°
4
78°
54°
5
78°
54°
6
79°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lake Mathews
Lake Mathews's May 2026 forecast shows daily high temperatures ranging from 75° to 96°, with overnight lows between 49° and 58°. The average high for May is 82° with an average low of 53°. 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 Lake Mathews. See also: June | July | August.
