S
M
T
W
T
F
S
26
84°
62°
27
83°
66°
28
74°
62°
29
72°
58°
30
65°
49°
1
67°
49°
2
70°
47°
3
75°
44°
4
81°
57°
5
68°
51°
6
59°
49°
7
69°
50°
8
78°
58°
9
82°
59°
10
72°
50°
11
75°
52°
12
75°
59°
13
78°
54°
14
80°
57°
15
83°
64°
16
84°
65°
17
81°
62°
18
83°
66°
19
82°
67°
20
79°
59°
21
78°
62°
22
75°
63°
23
76°
63°
24
75°
64°
25
75°
64°
26
76°
63°
27
77°
63°
28
78°
62°
29
78°
63°
30
79°
63°
31
78°
62°
1
81°
64°
2
83°
66°
3
85°
67°
4
83°
68°
5
80°
68°
6
81°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fontaine
Fontaine's May 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 50° and 68°. The average high for May is 79° with an average low of 62°. 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 Fontaine. See also: June | July | August.