S
M
T
W
T
F
S
26
57°
43°
27
73°
43°
28
59°
52°
29
61°
54°
30
70°
46°
1
70°
41°
2
61°
46°
3
66°
39°
4
79°
46°
5
86°
59°
6
72°
55°
7
72°
54°
8
72°
45°
9
70°
55°
10
81°
52°
11
66°
52°
12
73°
45°
13
75°
55°
14
61°
52°
15
72°
52°
16
86°
52°
17
90°
63°
18
100°
66°
19
99°
73°
20
93°
70°
21
68°
54°
22
63°
52°
23
54°
50°
24
66°
52°
25
79°
61°
26
77°
68°
27
80°
63°
28
79°
54°
29
79°
60°
30
78°
50°
31
73°
48°
1
72°
50°
2
74°
51°
3
75°
56°
4
76°
55°
5
84°
61°
6
86°
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 72° to 86°, with overnight lows between 48° and 68°. 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.
