S
M
T
W
T
F
S
26
86°
69°
27
86°
70°
28
87°
70°
29
87°
72°
30
88°
71°
31
86°
71°
1
87°
70°
2
89°
70°
3
90°
72°
4
89°
71°
5
90°
73°
6
90°
69°
7
86°
69°
8
85°
70°
9
86°
69°
10
86°
69°
11
87°
70°
12
86°
69°
13
87°
70°
14
89°
72°
15
89°
72°
16
88°
71°
17
89°
72°
18
89°
72°
19
88°
71°
20
88°
72°
21
87°
71°
22
88°
71°
23
88°
70°
24
87°
71°
25
87°
71°
26
86°
70°
27
88°
70°
28
87°
69°
29
86°
70°
30
87°
71°
31
87°
70°
1
86°
69°
2
87°
69°
3
86°
68°
4
88°
70°
5
88°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Jasper
Jasper's August 2026 forecast shows daily high temperatures ranging from 85° to 90°, with overnight lows between 68° and 73°. The average high for August is 87° with an average low of 70°. 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 Jasper. See also: September | October | November.