S
M
T
W
T
F
S
26
66°
39°
27
70°
43°
28
63°
46°
29
63°
46°
30
69°
49°
1
78°
48°
2
73°
56°
3
66°
48°
4
65°
46°
5
61°
44°
6
58°
40°
7
57°
41°
8
61°
45°
9
62°
47°
10
63°
49°
11
64°
50°
12
66°
51°
13
59°
43°
14
58°
40°
15
62°
47°
16
63°
48°
17
64°
47°
18
65°
48°
19
64°
46°
20
61°
46°
21
61°
44°
22
62°
43°
23
61°
44°
24
63°
44°
25
60°
42°
26
60°
43°
27
62°
48°
28
63°
49°
29
67°
50°
30
66°
45°
31
60°
44°
1
60°
44°
2
61°
43°
3
60°
45°
4
61°
44°
5
61°
44°
6
62°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Watford
Watford's May 2026 forecast shows daily high temperatures ranging from 57° to 78°, with overnight lows between 40° and 56°. The average high for May is 63° with an average low of 46°. 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 Watford. See also: June | July | August.
