S
M
T
W
T
F
S
26
89°
70°
27
90°
69°
28
89°
70°
29
90°
70°
30
91°
71°
31
92°
71°
1
91°
70°
2
87°
69°
3
85°
69°
4
85°
68°
5
86°
69°
6
84°
69°
7
84°
68°
8
85°
68°
9
86°
69°
10
88°
68°
11
89°
69°
12
86°
69°
13
86°
68°
14
89°
67°
15
84°
68°
16
84°
68°
17
88°
67°
18
89°
68°
19
88°
67°
20
89°
62°
21
86°
61°
22
83°
60°
23
82°
61°
24
83°
62°
25
84°
61°
26
83°
66°
27
86°
62°
28
86°
61°
29
82°
61°
30
81°
59°
31
81°
59°
1
80°
60°
2
80°
63°
3
81°
64°
4
81°
60°
5
84°
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 80° to 92°, with overnight lows between 59° and 71°. The average high for August is 86° with an average low of 66°. 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.
