S
M
T
W
T
F
S
26
75°
56°
27
74°
52°
28
72°
53°
29
70°
48°
30
67°
55°
1
68°
54°
2
73°
52°
3
70°
50°
4
73°
52°
5
77°
56°
6
78°
58°
7
79°
59°
8
79°
59°
9
80°
58°
10
80°
59°
11
76°
57°
12
75°
59°
13
78°
59°
14
77°
53°
15
72°
53°
16
76°
58°
17
81°
59°
18
76°
53°
19
75°
51°
20
75°
51°
21
74°
52°
22
75°
53°
23
73°
60°
24
77°
62°
25
85°
62°
26
85°
61°
27
86°
63°
28
85°
64°
29
88°
64°
30
87°
56°
31
85°
55°
1
79°
59°
2
84°
62°
3
86°
64°
4
85°
63°
5
88°
56°
6
81°
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 67° to 88°, with overnight lows between 48° and 64°. The average high for May is 78° with an average low of 57°. 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.
