S
M
T
W
T
F
S
28
94°
78°
29
94°
78°
30
94°
77°
1
93°
75°
2
94°
73°
3
94°
75°
4
97°
68°
5
88°
68°
6
92°
70°
7
93°
68°
8
97°
76°
9
98°
79°
10
97°
76°
11
91°
73°
12
92°
72°
13
88°
74°
14
92°
73°
15
94°
72°
16
97°
72°
17
96°
73°
18
95°
74°
19
95°
73°
20
102°
78°
21
98°
77°
22
97°
76°
23
97°
75°
24
96°
74°
25
96°
73°
26
95°
74°
27
97°
75°
28
97°
75°
29
96°
74°
30
97°
75°
31
96°
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 88° to 102°, with overnight lows between 68° and 79°. The average high for July is 96° with an average low of 74°. 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.