S
M
T
W
T
F
S
26
55°
35°
27
67°
37°
28
63°
48°
29
63°
46°
30
60°
41°
1
63°
48°
2
61°
44°
3
59°
45°
4
81°
55°
5
84°
60°
6
71°
48°
7
64°
43°
8
65°
53°
9
68°
46°
10
74°
50°
11
59°
42°
12
65°
47°
13
75°
53°
14
65°
48°
15
65°
47°
16
80°
61°
17
86°
62°
18
94°
70°
19
99°
74°
20
97°
56°
21
69°
51°
22
61°
50°
23
58°
52°
24
65°
54°
25
75°
56°
26
74°
57°
27
76°
56°
28
76°
59°
29
77°
58°
30
78°
59°
31
83°
55°
1
76°
58°
2
72°
56°
3
70°
59°
4
72°
60°
5
76°
58°
6
76°
60°
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 58° to 99°, with overnight lows between 50° and 74°. The average high for May is 76° with an average low of 58°. 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.
