S
M
T
W
T
F
S
26
80°
44°
27
65°
52°
28
69°
55°
29
75°
54°
30
74°
51°
1
66°
41°
2
67°
38°
3
69°
40°
4
74°
44°
5
76°
50°
6
75°
49°
7
75°
51°
8
75°
52°
9
75°
55°
10
78°
53°
11
82°
50°
12
84°
48°
13
76°
45°
14
70°
47°
15
68°
45°
16
71°
46°
17
73°
44°
18
72°
46°
19
81°
47°
20
80°
45°
21
75°
46°
22
69°
37°
23
67°
37°
24
71°
42°
25
77°
53°
26
76°
56°
27
69°
57°
28
71°
49°
29
67°
50°
30
71°
56°
31
65°
52°
1
66°
50°
2
65°
46°
3
67°
51°
4
67°
49°
5
66°
48°
6
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Guildford
Guildford's May 2026 forecast shows daily high temperatures ranging from 65° to 77°, with overnight lows between 46° and 57°. The average high for May is 69° with an average low of 51°. 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 Guildford. See also: June | July | August.