S
M
T
W
T
F
S
26
89°
71°
27
94°
71°
28
91°
70°
29
91°
69°
30
90°
70°
31
94°
72°
1
95°
71°
2
94°
71°
3
92°
72°
4
91°
68°
5
90°
70°
6
90°
70°
7
91°
69°
8
89°
71°
9
89°
71°
10
90°
70°
11
89°
71°
12
90°
71°
13
90°
70°
14
91°
70°
15
94°
67°
16
94°
70°
17
93°
71°
18
94°
68°
19
91°
69°
20
92°
67°
21
91°
68°
22
92°
69°
23
92°
69°
24
90°
68°
25
90°
68°
26
92°
70°
27
93°
70°
28
92°
69°
29
92°
69°
30
91°
66°
31
91°
66°
1
90°
68°
2
91°
68°
3
91°
67°
4
90°
68°
5
90°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marion Junction
Marion Junction's August 2026 forecast shows daily high temperatures ranging from 89° to 95°, with overnight lows between 66° and 72°. The average high for August is 91° with an average low of 69°. 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 Marion Junction. See also: September | October | November.