S
M
T
W
T
F
S
26
84°
61°
27
81°
65°
28
73°
64°
29
81°
64°
30
72°
58°
1
66°
54°
2
70°
48°
3
71°
41°
4
80°
46°
5
78°
57°
6
80°
66°
7
73°
54°
8
70°
52°
9
77°
58°
10
84°
63°
11
79°
63°
12
79°
60°
13
82°
54°
14
77°
50°
15
82°
58°
16
84°
62°
17
90°
68°
18
90°
68°
19
89°
67°
20
85°
66°
21
84°
65°
22
83°
63°
23
86°
64°
24
86°
65°
25
85°
65°
26
87°
66°
27
86°
62°
28
85°
67°
29
87°
67°
30
83°
66°
31
84°
63°
1
83°
64°
2
87°
66°
3
88°
67°
4
89°
68°
5
89°
68°
6
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fairfield
Fairfield's May 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 50° and 68°. The average high for May is 86° with an average low of 65°. 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 Fairfield. See also: June | July | August.
