S
M
T
W
T
F
S
26
63°
44°
27
59°
47°
28
59°
44°
29
66°
42°
30
73°
43°
1
64°
45°
2
61°
48°
3
N/A
4
59°
41°
5
57°
42°
6
55°
41°
7
57°
41°
8
60°
43°
9
59°
45°
10
59°
43°
11
60°
47°
12
60°
47°
13
59°
47°
14
60°
46°
15
59°
47°
16
58°
44°
17
59°
43°
18
59°
48°
19
58°
47°
20
58°
47°
21
59°
48°
22
59°
47°
23
60°
50°
24
60°
50°
25
61°
49°
26
60°
50°
27
60°
47°
28
61°
45°
29
59°
45°
30
61°
50°
31
62°
48°
1
60°
49°
2
62°
48°
3
62°
48°
4
63°
46°
5
63°
46°
6
65°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Preston
Preston's May 2026 forecast shows daily high temperatures ranging from 55° to 65°, with overnight lows between 41° and 50°. The average high for May is 60° 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 Preston. See also: June | July | August.