S
M
T
W
T
F
S
26
106°
75°
27
101°
67°
28
93°
66°
29
94°
69°
30
86°
67°
31
84°
63°
1
90°
61°
2
98°
67°
3
96°
57°
4
77°
54°
5
80°
59°
6
84°
62°
7
88°
63°
8
90°
62°
9
89°
63°
10
89°
62°
11
90°
64°
12
89°
67°
13
88°
63°
14
87°
61°
15
91°
67°
16
92°
66°
17
90°
66°
18
90°
65°
19
89°
66°
20
90°
67°
21
91°
66°
22
90°
65°
23
89°
65°
24
90°
64°
25
90°
63°
26
83°
63°
27
88°
62°
28
90°
64°
29
91°
65°
30
92°
66°
31
92°
65°
1
91°
64°
2
91°
65°
3
90°
65°
4
90°
64°
5
89°
65°
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 77° to 98°, with overnight lows between 54° and 67°. The average high for August is 89° 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 Valentine. See also: September | October | November.
