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
88°
70°
16
90°
73°
17
86°
76°
18
89°
74°
19
84°
70°
20
81°
66°
21
83°
67°
22
79°
68°
23
84°
67°
24
84°
69°
25
85°
71°
26
87°
70°
27
88°
70°
28
90°
67°
29
91°
71°
30
87°
71°
31
86°
70°
1
85°
70°
2
86°
71°
3
88°
71°
4
89°
70°
5
86°
71°
6
86°
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 79° to 91°, with overnight lows between 66° and 76°. The average high for May is 86° with an average low of 70°. 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.