S
M
T
W
T
F
S
26
80°
63°
27
81°
63°
28
74°
63°
29
71°
59°
30
75°
57°
31
79°
60°
1
82°
59°
2
78°
57°
3
78°
60°
4
76°
59°
5
78°
60°
6
80°
57°
7
80°
61°
8
81°
61°
9
80°
60°
10
78°
58°
11
73°
56°
12
73°
53°
13
75°
61°
14
77°
61°
15
78°
60°
16
77°
60°
17
76°
59°
18
73°
60°
19
74°
60°
20
77°
59°
21
78°
55°
22
71°
53°
23
74°
56°
24
78°
59°
25
79°
59°
26
78°
56°
27
74°
53°
28
70°
53°
29
73°
54°
30
76°
57°
31
77°
58°
1
78°
58°
2
75°
52°
3
66°
49°
4
65°
47°
5
69°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lanark
Lanark's August 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 45° and 63°. The average high for August is 76° with an average low of 57°. 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. See also: September | October | November.
