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
69°
53°
4
66°
56°
5
68°
52°
6
79°
55°
7
79°
52°
8
83°
56°
9
89°
58°
10
91°
59°
11
90°
57°
12
91°
56°
13
92°
55°
14
86°
56°
15
83°
57°
16
78°
52°
17
82°
57°
18
81°
56°
19
82°
57°
20
83°
57°
21
82°
55°
22
81°
55°
23
83°
57°
24
84°
57°
25
84°
56°
26
83°
56°
27
77°
55°
28
76°
55°
29
77°
56°
30
78°
56°
31
79°
58°
1
81°
58°
2
84°
57°
3
83°
58°
4
78°
57°
5
79°
56°
6
77°
55°
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 92°, with overnight lows between 52° and 59°. The average high for May is 81° with an average low of 56°. 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.
