S
M
T
W
T
F
S
26
95°
75°
27
95°
73°
28
92°
72°
29
87°
66°
30
87°
63°
31
78°
63°
1
74°
69°
2
81°
67°
3
86°
62°
4
88°
63°
5
88°
63°
6
77°
70°
7
88°
70°
8
88°
70°
9
90°
70°
10
93°
75°
11
96°
75°
12
94°
72°
13
95°
72°
14
95°
77°
15
95°
76°
16
96°
74°
17
85°
66°
18
88°
64°
19
83°
70°
20
90°
72°
21
88°
65°
22
87°
65°
23
84°
64°
24
82°
60°
25
86°
64°
26
89°
66°
27
88°
62°
28
86°
63°
29
88°
64°
30
89°
67°
31
87°
65°
1
88°
63°
2
86°
63°
3
85°
62°
4
86°
63°
5
87°
64°
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 82° to 89°, with overnight lows between 60° and 67°. The average high for August is 87° with an average low of 64°. 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.