S
M
T
W
T
F
S
26
68°
35°
27
59°
37°
28
60°
41°
29
69°
35°
30
78°
41°
1
71°
45°
2
67°
46°
3
88°
46°
4
73°
51°
5
65°
47°
6
70°
51°
7
71°
48°
8
68°
45°
9
78°
43°
10
70°
49°
11
79°
44°
12
78°
47°
13
63°
51°
14
62°
45°
15
60°
39°
16
59°
42°
17
65°
36°
18
70°
41°
19
70°
39°
20
71°
43°
21
82°
44°
22
81°
46°
23
75°
48°
24
77°
42°
25
62°
46°
26
65°
48°
27
81°
50°
28
79°
54°
29
66°
41°
30
67°
42°
31
74°
44°
1
83°
50°
2
89°
55°
3
76°
49°
4
74°
48°
5
74°
49°
6
72°
48°
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 66° to 89°, with overnight lows between 41° and 55°. The average high for May is 76° with an average low of 48°. 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.
