S
M
T
W
T
F
S
26
100°
77°
27
100°
78°
28
101°
75°
29
100°
78°
30
101°
79°
31
104°
81°
1
100°
81°
2
96°
74°
3
100°
71°
4
100°
74°
5
102°
79°
6
101°
78°
7
101°
78°
8
102°
79°
9
99°
75°
10
100°
77°
11
100°
76°
12
102°
80°
13
101°
80°
14
100°
80°
15
102°
81°
16
104°
81°
17
106°
78°
18
106°
81°
19
105°
82°
20
106°
81°
21
103°
83°
22
108°
79°
23
107°
82°
24
108°
80°
25
105°
79°
26
101°
79°
27
98°
75°
28
100°
77°
29
102°
78°
30
100°
77°
31
99°
78°
1
101°
76°
2
98°
77°
3
97°
77°
4
100°
76°
5
92°
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 92° to 108°, with overnight lows between 70° and 82°. The average high for August is 101° with an average low of 77°. 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.
