S
M
T
W
T
F
S
26
64°
43°
27
66°
45°
28
55°
43°
29
64°
41°
30
70°
43°
1
73°
39°
2
64°
46°
3
61°
52°
4
55°
45°
5
57°
45°
6
54°
41°
7
59°
43°
8
63°
46°
9
66°
46°
10
57°
37°
11
54°
37°
12
57°
34°
13
54°
45°
14
55°
41°
15
55°
41°
16
55°
41°
17
57°
45°
18
55°
45°
19
61°
50°
20
64°
52°
21
70°
52°
22
81°
50°
23
75°
57°
24
81°
46°
25
N/A
26
89°
56°
27
78°
51°
28
83°
57°
29
75°
52°
30
76°
52°
31
71°
57°
1
71°
54°
2
66°
52°
3
65°
49°
4
64°
49°
5
64°
48°
6
65°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Fairfield
Fairfield's May 2026 forecast shows daily high temperatures ranging from 64° to 89°, with overnight lows between 48° and 57°. The average high for May is 72° with an average low of 52°. 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.
