S
M
T
W
T
F
S
26
92°
71°
27
92°
71°
28
93°
72°
29
93°
72°
30
92°
71°
31
94°
72°
1
93°
72°
2
94°
73°
3
95°
72°
4
93°
72°
5
94°
71°
6
94°
73°
7
95°
72°
8
93°
72°
9
92°
70°
10
88°
70°
11
90°
70°
12
90°
68°
13
91°
69°
14
92°
70°
15
93°
71°
16
92°
70°
17
92°
68°
18
91°
63°
19
86°
61°
20
84°
61°
21
84°
62°
22
85°
62°
23
84°
63°
24
85°
62°
25
85°
62°
26
86°
61°
27
86°
63°
28
85°
61°
29
85°
61°
30
87°
60°
31
87°
60°
1
88°
65°
2
89°
64°
3
84°
65°
4
85°
64°
5
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Harriet
Harriet's August 2026 forecast shows daily high temperatures ranging from 84° to 95°, with overnight lows between 60° and 73°. The average high for August is 90° with an average low of 67°. 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 Harriet. See also: September | October | November.