S
M
T
W
T
F
S
26
53°
40°
27
67°
36°
28
54°
47°
29
54°
49°
30
61°
40°
1
61°
40°
2
55°
38°
3
58°
42°
4
70°
51°
5
78°
58°
6
66°
52°
7
57°
40°
8
57°
37°
9
61°
45°
10
64°
46°
11
63°
48°
12
63°
49°
13
65°
48°
14
68°
49°
15
65°
51°
16
66°
51°
17
65°
50°
18
66°
55°
19
74°
55°
20
74°
54°
21
73°
56°
22
76°
56°
23
76°
55°
24
75°
55°
25
70°
51°
26
69°
56°
27
69°
57°
28
76°
58°
29
75°
58°
30
74°
57°
31
74°
56°
1
71°
51°
2
68°
52°
3
69°
51°
4
70°
50°
5
70°
51°
6
71°
52°
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 55° to 78°, with overnight lows between 37° and 58°. The average high for May is 68° with an average low of 51°. 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.
