S
M
T
W
T
F
S
26
85°
65°
27
86°
73°
28
83°
70°
29
71°
63°
30
68°
58°
1
68°
55°
2
76°
50°
3
81°
48°
4
82°
58°
5
78°
67°
6
77°
53°
7
71°
51°
8
79°
50°
9
86°
58°
10
81°
62°
11
78°
57°
12
81°
51°
13
86°
55°
14
83°
63°
15
92°
72°
16
90°
67°
17
87°
72°
18
90°
73°
19
86°
70°
20
79°
66°
21
79°
65°
22
80°
63°
23
83°
66°
24
88°
69°
25
89°
68°
26
84°
69°
27
91°
74°
28
87°
68°
29
85°
69°
30
82°
69°
31
84°
66°
1
84°
68°
2
85°
69°
3
85°
70°
4
88°
70°
5
89°
71°
6
87°
71°
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 79° to 92°, with overnight lows between 63° and 74°. The average high for May is 86° with an average low of 69°. 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.
