S
M
T
W
T
F
S
26
74°
53°
27
75°
52°
28
75°
56°
29
76°
60°
30
78°
61°
31
81°
62°
1
82°
62°
2
83°
61°
3
83°
61°
4
82°
55°
5
75°
55°
6
74°
54°
7
74°
53°
8
75°
55°
9
77°
56°
10
76°
60°
11
76°
60°
12
79°
59°
13
80°
60°
14
81°
61°
15
80°
59°
16
81°
52°
17
74°
53°
18
75°
51°
19
77°
52°
20
79°
58°
21
79°
58°
22
71°
57°
23
73°
56°
24
77°
58°
25
78°
58°
26
79°
55°
27
77°
49°
28
72°
52°
29
72°
56°
30
70°
57°
31
78°
58°
1
79°
57°
2
75°
54°
3
76°
49°
4
70°
48°
5
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lanark Highlands
Lanark Highlands's August 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 48° and 62°. The average high for August is 77° 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 Lanark Highlands. See also: September | October | November.