S
M
T
W
T
F
S
28
82°
70°
29
82°
68°
30
87°
63°
1
92°
72°
2
95°
75°
3
100°
74°
4
99°
74°
5
97°
76°
6
94°
75°
7
88°
72°
8
89°
69°
9
90°
72°
10
93°
71°
11
89°
67°
12
87°
68°
13
86°
67°
14
88°
68°
15
89°
68°
16
91°
67°
17
87°
68°
18
86°
69°
19
89°
70°
20
90°
70°
21
86°
69°
22
86°
70°
23
87°
70°
24
90°
69°
25
90°
70°
26
89°
70°
27
90°
69°
28
89°
70°
29
90°
70°
30
91°
71°
31
92°
71°
1
91°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Lancaster
Lancaster's July 2026 forecast shows daily high temperatures ranging from 86° to 100°, with overnight lows between 67° and 76°. The average high for July is 90° with an average low of 70°. 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 Lancaster. See also: August | September | October.