S
M
T
W
T
F
S
26
85°
72°
27
92°
75°
28
89°
75°
29
84°
62°
30
69°
59°
1
62°
52°
2
75°
47°
3
80°
47°
4
85°
61°
5
88°
71°
6
76°
60°
7
67°
57°
8
83°
57°
9
91°
70°
10
91°
64°
11
81°
60°
12
85°
55°
13
91°
58°
14
92°
65°
15
89°
67°
16
89°
69°
17
87°
75°
18
91°
78°
19
96°
64°
20
84°
67°
21
81°
64°
22
87°
61°
23
81°
66°
24
86°
65°
25
86°
66°
26
87°
66°
27
87°
70°
28
92°
70°
29
91°
69°
30
92°
70°
31
88°
68°
1
87°
66°
2
87°
65°
3
88°
65°
4
89°
68°
5
91°
68°
6
90°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Marble Falls
Marble Falls's May 2026 forecast shows daily high temperatures ranging from 81° to 92°, with overnight lows between 65° and 72°. The average high for May is 88° with an average low of 68°. 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 Marble Falls. See also: June | July | August.