S
M
T
W
T
F
S
26
75°
57°
27
72°
54°
28
70°
50°
29
82°
57°
30
75°
59°
1
66°
57°
2
59°
50°
3
70°
41°
4
79°
45°
5
81°
54°
6
82°
59°
7
79°
59°
8
73°
52°
9
75°
57°
10
86°
61°
11
82°
57°
12
70°
48°
13
79°
45°
14
79°
55°
15
79°
46°
16
86°
50°
17
91°
63°
18
91°
64°
19
91°
63°
20
91°
64°
21
93°
66°
22
91°
68°
23
79°
68°
24
82°
64°
25
77°
72°
26
86°
72°
27
88°
70°
28
91°
72°
29
86°
68°
30
88°
70°
31
72°
64°
1
86°
66°
2
73°
61°
3
81°
50°
4
86°
52°
5
90°
57°
6
90°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fairfax
Fairfax's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Fairfax. See also: June | July | August.
