S
M
T
W
T
F
S
26
52°
43°
27
68°
36°
28
63°
46°
29
59°
50°
30
63°
41°
1
64°
36°
2
54°
41°
3
61°
34°
4
75°
43°
5
81°
59°
6
70°
54°
7
68°
50°
8
70°
39°
9
70°
50°
10
77°
45°
11
61°
43°
12
70°
36°
13
70°
52°
14
55°
46°
15
70°
48°
16
81°
43°
17
86°
55°
18
93°
59°
19
95°
64°
20
90°
66°
21
68°
50°
22
55°
46°
23
50°
45°
24
64°
59°
25
73°
60°
26
74°
62°
27
72°
62°
28
78°
53°
29
79°
52°
30
75°
50°
31
73°
52°
1
74°
54°
2
74°
55°
3
75°
57°
4
78°
56°
5
77°
59°
6
80°
56°
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 64° to 80°, with overnight lows between 50° and 62°. The average high for May is 75° 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.
