S
M
T
W
T
F
S
26
59°
35°
27
54°
35°
28
58°
36°
29
54°
34°
30
59°
38°
1
62°
39°
2
62°
38°
3
64°
43°
4
57°
40°
5
59°
37°
6
63°
40°
7
66°
41°
8
57°
45°
9
62°
46°
10
65°
46°
11
65°
48°
12
67°
47°
13
63°
43°
14
60°
38°
15
64°
47°
16
68°
49°
17
72°
52°
18
72°
40°
19
61°
39°
20
61°
41°
21
62°
47°
22
67°
49°
23
70°
52°
24
75°
54°
25
75°
52°
26
72°
46°
27
64°
46°
28
65°
47°
29
66°
51°
30
67°
52°
31
66°
49°
1
67°
45°
2
69°
45°
3
71°
48°
4
70°
47°
5
71°
44°
6
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Farmington
Farmington's May 2026 forecast shows daily high temperatures ranging from 54° to 75°, with overnight lows between 34° and 54°. The average high for May is 65° 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 Farmington. See also: June | July | August.