S
M
T
W
T
F
S
26
77°
58°
27
77°
59°
28
78°
58°
29
82°
63°
30
81°
62°
1
84°
63°
2
82°
61°
3
82°
63°
4
83°
64°
5
84°
65°
6
84°
64°
7
83°
66°
8
84°
66°
9
84°
65°
10
74°
64°
11
76°
62°
12
77°
59°
13
76°
62°
14
78°
67°
15
80°
67°
16
83°
68°
17
85°
68°
18
83°
66°
19
76°
62°
20
77°
65°
21
79°
69°
22
84°
67°
23
80°
66°
24
85°
70°
25
86°
70°
26
87°
69°
27
84°
66°
28
80°
64°
29
87°
70°
30
83°
67°
31
87°
64°
1
86°
70°
2
88°
65°
3
90°
64°
4
89°
68°
5
92°
70°
6
91°
68°
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 74° to 92°, with overnight lows between 58° and 70°. The average high for May is 83° with an average low of 65°. 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.
