S
M
T
W
T
F
S
28
70°
54°
29
66°
50°
30
66°
52°
1
66°
50°
2
68°
50°
3
68°
48°
4
72°
55°
5
68°
55°
6
66°
59°
7
70°
59°
8
82°
59°
9
81°
59°
10
68°
59°
11
66°
57°
12
68°
52°
13
61°
43°
14
59°
54°
15
61°
55°
16
67°
52°
17
66°
51°
18
65°
47°
19
69°
49°
20
70°
51°
21
71°
55°
22
70°
54°
23
71°
53°
24
70°
52°
25
70°
52°
26
68°
52°
27
69°
53°
28
67°
51°
29
63°
55°
30
64°
54°
31
63°
55°
1
64°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Preston
Preston's July 2026 forecast shows daily high temperatures ranging from 63° to 71°, with overnight lows between 47° and 55°. The average high for July is 67° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Preston. See also: August | September | October.