S
M
T
W
T
F
S
26
56°
20°
27
40°
24°
28
49°
25°
29
54°
21°
30
54°
24°
1
61°
25°
2
70°
36°
3
73°
30°
4
50°
30°
5
43°
23°
6
54°
20°
7
65°
26°
8
71°
39°
9
62°
34°
10
68°
37°
11
82°
45°
12
73°
40°
13
81°
39°
14
74°
48°
15
71°
41°
16
66°
36°
17
48°
39°
18
43°
37°
19
57°
35°
20
72°
36°
21
66°
39°
22
55°
40°
23
71°
39°
24
82°
45°
25
88°
49°
26
90°
57°
27
87°
62°
28
90°
60°
29
83°
58°
30
74°
59°
31
79°
54°
1
72°
51°
2
72°
50°
3
73°
53°
4
75°
52°
5
73°
55°
6
83°
59°
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 72° to 90°, with overnight lows between 50° and 62°. The average high for May is 78° with an average low of 56°. 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.
