S
M
T
W
T
F
S
26
67°
51°
27
69°
47°
28
75°
47°
29
80°
48°
30
81°
50°
1
75°
53°
2
69°
54°
3
70°
52°
4
65°
52°
5
67°
53°
6
77°
55°
7
80°
53°
8
78°
53°
9
84°
54°
10
81°
53°
11
92°
53°
12
78°
53°
13
79°
53°
14
87°
53°
15
86°
53°
16
84°
52°
17
78°
48°
18
85°
57°
19
90°
51°
20
93°
49°
21
94°
56°
22
83°
52°
23
76°
55°
24
76°
53°
25
70°
53°
26
73°
49°
27
76°
46°
28
72°
54°
29
73°
54°
30
82°
53°
31
89°
54°
1
94°
53°
2
84°
54°
3
91°
54°
4
92°
56°
5
94°
57°
6
82°
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 ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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.