S
M
T
W
T
F
S
26
82°
64°
27
82°
64°
28
83°
62°
29
85°
66°
30
85°
68°
31
88°
69°
1
90°
68°
2
89°
69°
3
89°
69°
4
88°
63°
5
86°
60°
6
82°
59°
7
80°
60°
8
81°
59°
9
81°
60°
10
82°
61°
11
83°
65°
12
88°
66°
13
89°
67°
14
88°
66°
15
90°
62°
16
88°
60°
17
81°
59°
18
82°
60°
19
84°
61°
20
82°
59°
21
83°
59°
22
80°
62°
23
87°
65°
24
87°
65°
25
89°
59°
26
81°
64°
27
83°
66°
28
87°
65°
29
87°
65°
30
88°
64°
31
85°
61°
1
81°
62°
2
84°
59°
3
80°
60°
4
82°
63°
5
79°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lucerne
Lucerne's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 59° and 69°. The average high for August is 85° with an average low of 63°. 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 Lucerne. See also: September | October | November.
