S
M
T
W
T
F
S
26
99°
78°
27
99°
75°
28
99°
76°
29
94°
77°
30
95°
76°
31
98°
77°
1
93°
73°
2
87°
70°
3
91°
67°
4
93°
67°
5
95°
68°
6
96°
70°
7
97°
73°
8
94°
71°
9
96°
72°
10
98°
72°
11
96°
74°
12
99°
78°
13
99°
79°
14
99°
76°
15
100°
73°
16
102°
75°
17
103°
76°
18
103°
73°
19
103°
77°
20
103°
76°
21
98°
72°
22
104°
72°
23
97°
71°
24
83°
71°
25
95°
74°
26
93°
71°
27
95°
71°
28
93°
69°
29
94°
74°
30
96°
73°
31
95°
72°
1
98°
74°
2
97°
73°
3
97°
73°
4
98°
71°
5
88°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Swan Lake
Swan Lake's August 2026 forecast shows daily high temperatures ranging from 83° to 98°, with overnight lows between 66° and 74°. The average high for August is 94° with an average low of 72°. 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 Swan Lake. See also: September | October | November.