S
M
T
W
T
F
S
26
80°
60°
27
85°
61°
28
75°
54°
29
66°
49°
30
66°
44°
1
66°
46°
2
66°
43°
3
80°
38°
4
77°
58°
5
70°
46°
6
61°
46°
7
69°
38°
8
77°
46°
9
81°
49°
10
71°
52°
11
76°
45°
12
78°
46°
13
79°
56°
14
79°
53°
15
79°
66°
16
84°
72°
17
84°
70°
18
86°
74°
19
75°
59°
20
65°
58°
21
75°
62°
22
N/A
23
77°
60°
24
82°
63°
25
82°
65°
26
77°
66°
27
80°
65°
28
75°
62°
29
78°
63°
30
80°
59°
31
81°
62°
1
84°
64°
2
84°
64°
3
83°
63°
4
82°
61°
5
83°
65°
6
78°
65°
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 75° to 84°, with overnight lows between 59° and 66°. The average high for May is 80° with an average low of 63°. 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.
