S
M
T
W
T
F
S
26
88°
72°
27
91°
72°
28
93°
72°
29
91°
72°
30
88°
66°
31
91°
64°
1
88°
72°
2
84°
72°
3
86°
72°
4
88°
72°
5
88°
70°
6
88°
72°
7
90°
70°
8
91°
73°
9
93°
72°
10
93°
72°
11
95°
72°
12
91°
70°
13
95°
72°
14
95°
73°
15
97°
75°
16
95°
75°
17
99°
75°
18
95°
72°
19
95°
72°
20
95°
73°
21
90°
70°
22
82°
70°
23
90°
71°
24
90°
68°
25
88°
63°
26
91°
66°
27
89°
70°
28
88°
70°
29
88°
68°
30
87°
71°
31
93°
68°
1
96°
71°
2
99°
73°
3
99°
73°
4
97°
73°
5
97°
70°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.