S
M
T
W
T
F
S
28
97°
76°
29
95°
77°
30
93°
76°
1
91°
75°
2
92°
74°
3
96°
74°
4
90°
67°
5
93°
70°
6
93°
69°
7
93°
73°
8
98°
73°
9
97°
71°
10
91°
71°
11
100°
71°
12
101°
72°
13
102°
71°
14
101°
73°
15
99°
72°
16
99°
71°
17
93°
68°
18
98°
75°
19
98°
75°
20
98°
75°
21
99°
74°
22
97°
74°
23
97°
73°
24
96°
73°
25
96°
72°
26
97°
74°
27
97°
75°
28
98°
75°
29
98°
74°
30
97°
75°
31
98°
75°
1
97°
74°
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 90° to 102°, with overnight lows between 67° and 75°. The average high for July is 97° with an average low of 73°. 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.