S
M
T
W
T
F
S
26
57°
40°
27
53°
40°
28
54°
35°
29
53°
33°
30
60°
37°
1
57°
42°
2
64°
39°
3
59°
36°
4
55°
37°
5
55°
37°
6
58°
35°
7
57°
37°
8
56°
38°
9
57°
39°
10
57°
38°
11
66°
43°
12
65°
40°
13
62°
38°
14
60°
38°
15
59°
39°
16
60°
39°
17
64°
48°
18
70°
47°
19
65°
46°
20
63°
43°
21
69°
47°
22
64°
43°
23
68°
44°
24
71°
46°
25
72°
50°
26
73°
51°
27
74°
52°
28
75°
52°
29
74°
51°
30
73°
51°
31
67°
52°
1
68°
52°
2
68°
51°
3
69°
51°
4
70°
46°
5
71°
55°
6
75°
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 53° to 75°, with overnight lows between 33° and 55°. The average high for May is 64° with an average low of 44°. 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.
