S
M
T
W
T
F
S
26
87°
71°
27
87°
73°
28
89°
73°
29
90°
72°
30
88°
73°
31
91°
73°
1
91°
72°
2
90°
73°
3
88°
73°
4
89°
72°
5
89°
73°
6
88°
73°
7
91°
72°
8
90°
72°
9
91°
73°
10
91°
73°
11
90°
72°
12
90°
73°
13
89°
73°
14
87°
72°
15
87°
72°
16
86°
71°
17
85°
71°
18
86°
72°
19
86°
72°
20
87°
71°
21
86°
72°
22
87°
72°
23
89°
71°
24
90°
70°
25
91°
70°
26
90°
70°
27
89°
69°
28
90°
68°
29
89°
69°
30
90°
71°
31
91°
71°
1
90°
70°
2
89°
71°
3
89°
70°
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 91°, with overnight lows between 68° and 73°. The average high for August is 89° 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 Jasper. See also: September | October | November.