S
M
T
W
T
F
S
26
90°
71°
27
89°
71°
28
84°
70°
29
85°
71°
30
85°
68°
31
86°
66°
1
84°
66°
2
84°
68°
3
83°
70°
4
84°
69°
5
84°
66°
6
85°
66°
7
84°
71°
8
83°
71°
9
84°
69°
10
89°
69°
11
84°
67°
12
84°
69°
13
85°
68°
14
88°
70°
15
89°
69°
16
89°
70°
17
88°
70°
18
88°
69°
19
88°
64°
20
85°
64°
21
82°
65°
22
83°
63°
23
83°
63°
24
84°
64°
25
83°
63°
26
83°
64°
27
84°
64°
28
83°
65°
29
87°
63°
30
86°
63°
31
83°
68°
1
86°
66°
2
87°
63°
3
82°
62°
4
83°
63°
5
82°
64°
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 82° to 90°, with overnight lows between 62° and 71°. The average high for August is 85° with an average low of 67°. 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.
