S
M
T
W
T
F
S
26
86°
72°
27
87°
74°
28
86°
73°
29
86°
71°
30
81°
68°
1
69°
55°
2
74°
53°
3
77°
48°
4
78°
52°
5
82°
60°
6
86°
73°
7
77°
61°
8
73°
66°
9
76°
65°
10
86°
65°
11
81°
68°
12
83°
65°
13
85°
64°
14
N/A
15
86°
67°
16
83°
70°
17
85°
75°
18
86°
74°
19
87°
73°
20
86°
72°
21
85°
68°
22
84°
69°
23
85°
68°
24
84°
69°
25
85°
70°
26
87°
71°
27
88°
75°
28
86°
70°
29
86°
71°
30
85°
71°
31
83°
70°
1
83°
71°
2
84°
71°
3
86°
70°
4
86°
72°
5
85°
72°
6
84°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in St. Martinville
St. Martinville's May 2026 forecast shows daily high temperatures ranging from 83° to 88°, with overnight lows between 67° and 75°. The average high for May is 85° with an average low of 71°. 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 St. Martinville. See also: June | July | August.