S
M
T
W
T
F
S
26
82°
47°
27
87°
49°
28
85°
52°
29
73°
65°
30
76°
61°
31
84°
60°
1
88°
55°
2
90°
64°
3
81°
67°
4
89°
59°
5
89°
52°
6
91°
67°
7
92°
66°
8
84°
66°
9
89°
58°
10
88°
62°
11
80°
58°
12
80°
58°
13
78°
56°
14
75°
57°
15
74°
55°
16
74°
54°
17
73°
53°
18
72°
54°
19
73°
56°
20
73°
55°
21
72°
52°
22
72°
59°
23
78°
60°
24
76°
60°
25
71°
59°
26
75°
55°
27
71°
54°
28
70°
59°
29
74°
57°
30
77°
58°
31
77°
56°
1
76°
52°
2
68°
54°
3
68°
53°
4
69°
48°
5
69°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Harrison
Harrison's August 2026 forecast shows daily high temperatures ranging from 68° to 92°, with overnight lows between 48° and 67°. The average high for August is 76° with an average low of 57°. 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 Harrison. See also: September | October | November.