S
M
T
W
T
F
S
26
77°
54°
27
82°
50°
28
81°
59°
29
68°
52°
30
64°
43°
1
64°
41°
2
61°
39°
3
66°
36°
4
81°
50°
5
73°
59°
6
64°
48°
7
66°
45°
8
73°
43°
9
77°
55°
10
82°
55°
11
75°
52°
12
81°
46°
13
79°
54°
14
68°
43°
15
75°
46°
16
88°
64°
17
90°
64°
18
89°
70°
19
86°
66°
20
73°
58°
21
69°
57°
22
73°
66°
23
80°
60°
24
80°
58°
25
84°
61°
26
80°
60°
27
83°
60°
28
81°
60°
29
83°
58°
30
81°
58°
31
85°
56°
1
86°
61°
2
85°
60°
3
83°
58°
4
79°
55°
5
79°
54°
6
82°
61°
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 69° to 89°, with overnight lows between 54° and 70°. The average high for May is 81° with an average low of 60°. 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.
