S
M
T
W
T
F
S
26
81°
66°
27
83°
66°
28
81°
65°
29
82°
66°
30
83°
65°
31
78°
64°
1
76°
61°
2
77°
62°
3
79°
63°
4
80°
64°
5
83°
65°
6
84°
66°
7
85°
68°
8
86°
66°
9
85°
65°
10
84°
65°
11
85°
66°
12
85°
66°
13
84°
67°
14
82°
57°
15
76°
61°
16
75°
55°
17
78°
56°
18
79°
55°
19
78°
53°
20
74°
53°
21
74°
56°
22
75°
54°
23
75°
53°
24
76°
60°
25
77°
60°
26
81°
59°
27
82°
55°
28
82°
53°
29
73°
53°
30
71°
54°
31
71°
53°
1
72°
51°
2
72°
56°
3
75°
51°
4
74°
54°
5
71°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Excelsior
Excelsior's August 2026 forecast shows daily high temperatures ranging from 71° to 86°, with overnight lows between 51° and 68°. The average high for August is 79° with an average low of 60°. 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 Excelsior. See also: September | October | November.
