S
M
T
W
T
F
S
26
88°
68°
27
87°
69°
28
89°
69°
29
88°
68°
30
87°
69°
31
86°
68°
1
82°
64°
2
82°
64°
3
83°
68°
4
84°
67°
5
87°
68°
6
88°
69°
7
89°
69°
8
88°
68°
9
88°
68°
10
87°
67°
11
87°
67°
12
88°
68°
13
88°
68°
14
90°
65°
15
87°
66°
16
87°
64°
17
81°
62°
18
83°
58°
19
80°
56°
20
79°
55°
21
78°
56°
22
78°
56°
23
79°
55°
24
80°
61°
25
82°
60°
26
87°
64°
27
86°
64°
28
87°
63°
29
86°
55°
30
79°
57°
31
76°
59°
1
76°
54°
2
77°
52°
3
76°
58°
4
81°
61°
5
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lancaster
Lancaster's August 2026 forecast shows daily high temperatures ranging from 76° to 90°, with overnight lows between 52° and 69°. The average high for August is 84° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Lancaster. See also: September | October | November.
