S
M
T
W
T
F
S
26
76°
56°
27
76°
57°
28
74°
54°
29
75°
56°
30
75°
55°
31
76°
54°
1
78°
59°
2
80°
60°
3
75°
60°
4
75°
59°
5
77°
55°
6
76°
56°
7
77°
56°
8
79°
57°
9
76°
53°
10
75°
54°
11
79°
55°
12
80°
59°
13
74°
56°
14
73°
56°
15
74°
58°
16
73°
54°
17
73°
59°
18
80°
59°
19
81°
58°
20
82°
60°
21
82°
60°
22
80°
59°
23
80°
57°
24
79°
52°
25
72°
51°
26
70°
58°
27
71°
53°
28
72°
51°
29
73°
56°
30
75°
59°
31
78°
53°
1
77°
49°
2
70°
50°
3
73°
57°
4
Hist. Avg.
73°
49°
5
Hist. Avg.
73°
49°
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 70° to 82°, with overnight lows between 49° and 60°. The average high for August is 76° with an average low of 56°. 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.
