S
M
T
W
T
F
S
28
84°
52°
29
88°
52°
30
89°
48°
1
86°
51°
2
88°
51°
3
90°
54°
4
91°
58°
5
92°
58°
6
91°
56°
7
88°
56°
8
90°
55°
9
87°
56°
10
89°
55°
11
90°
55°
12
91°
57°
13
93°
59°
14
92°
58°
15
91°
56°
16
88°
51°
17
84°
52°
18
85°
53°
19
87°
56°
20
89°
60°
21
94°
55°
22
93°
55°
23
87°
59°
24
90°
57°
25
88°
58°
26
90°
59°
27
92°
59°
28
90°
58°
29
89°
57°
30
92°
59°
31
93°
57°
1
89°
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 84° to 94°, with overnight lows between 48° and 60°. The average high for July is 89° with an average low of 56°. 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.