S
M
T
W
T
F
S
26
91°
72°
27
93°
73°
28
90°
73°
29
91°
72°
30
92°
73°
31
93°
73°
1
93°
72°
2
92°
73°
3
91°
73°
4
93°
72°
5
92°
72°
6
93°
71°
7
94°
72°
8
94°
72°
9
93°
73°
10
93°
72°
11
90°
71°
12
90°
72°
13
89°
72°
14
87°
71°
15
88°
69°
16
88°
71°
17
87°
69°
18
88°
69°
19
88°
71°
20
86°
70°
21
87°
70°
22
88°
69°
23
89°
71°
24
93°
69°
25
93°
70°
26
90°
69°
27
91°
68°
28
93°
69°
29
92°
68°
30
92°
70°
31
93°
69°
1
91°
69°
2
88°
68°
3
87°
68°
4
88°
67°
5
86°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Valentine
Valentine's August 2026 forecast shows daily high temperatures ranging from 86° to 94°, with overnight lows between 66° and 73°. The average high for August is 90° with an average low of 71°. 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 Valentine. See also: September | October | November.
