S
M
T
W
T
F
S
26
92°
58°
27
91°
59°
28
91°
58°
29
95°
59°
30
97°
60°
31
98°
60°
1
97°
59°
2
93°
59°
3
91°
58°
4
94°
57°
5
91°
57°
6
92°
56°
7
91°
55°
8
90°
56°
9
90°
57°
10
91°
57°
11
90°
56°
12
95°
57°
13
95°
55°
14
95°
56°
15
96°
57°
16
96°
57°
17
95°
56°
18
97°
57°
19
96°
56°
20
95°
57°
21
96°
56°
22
96°
54°
23
92°
57°
24
95°
57°
25
96°
56°
26
95°
57°
27
95°
57°
28
94°
56°
29
91°
53°
30
89°
52°
31
89°
56°
1
92°
58°
2
94°
57°
3
94°
54°
4
88°
56°
5
88°
53°
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 88° to 98°, with overnight lows between 52° and 60°. The average high for August is 93° 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 Lucerne. See also: September | October | November.