S
M
T
W
T
F
S
26
80°
55°
27
79°
56°
28
78°
56°
29
79°
55°
30
79°
55°
31
80°
56°
1
80°
58°
2
81°
60°
3
80°
57°
4
81°
56°
5
82°
56°
6
86°
58°
7
85°
60°
8
86°
63°
9
87°
62°
10
85°
55°
11
80°
56°
12
80°
55°
13
81°
54°
14
81°
58°
15
81°
61°
16
Hist. Avg.
83°
59°
17
Hist. Avg.
83°
59°
18
Hist. Avg.
83°
59°
19
Hist. Avg.
83°
59°
20
Hist. Avg.
83°
58°
21
Hist. Avg.
83°
58°
22
Hist. Avg.
83°
58°
23
Hist. Avg.
82°
58°
24
Hist. Avg.
82°
58°
25
Hist. Avg.
82°
58°
26
Hist. Avg.
82°
57°
27
Hist. Avg.
82°
57°
28
Hist. Avg.
82°
57°
29
Hist. Avg.
82°
56°
30
Hist. Avg.
81°
56°
31
Hist. Avg.
81°
56°
1
Hist. Avg.
81°
56°
2
Hist. Avg.
81°
55°
3
Hist. Avg.
80°
55°
4
Hist. Avg.
80°
54°
5
Hist. Avg.
80°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Lanark
Lanark's August 2026 forecast shows daily high temperatures ranging from 78° to 87°, with overnight lows between 54° and 63°. The average high for August is 81° 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.