S
M
T
W
T
F
S
28
88°
69°
29
87°
62°
30
90°
65°
1
95°
70°
2
98°
73°
3
102°
74°
4
101°
73°
5
99°
72°
6
96°
71°
7
87°
71°
8
89°
68°
9
88°
70°
10
87°
69°
11
91°
72°
12
90°
71°
13
91°
71°
14
89°
68°
15
85°
67°
16
86°
67°
17
86°
68°
18
89°
70°
19
90°
71°
20
89°
71°
21
91°
72°
22
90°
71°
23
89°
71°
24
87°
70°
25
89°
72°
26
90°
71°
27
89°
71°
28
84°
70°
29
85°
71°
30
85°
68°
31
86°
66°
1
84°
66°
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 84° to 102°, with overnight lows between 62° and 74°. 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.