S
M
T
W
T
F
S
26
85°
67°
27
86°
68°
28
82°
64°
29
81°
59°
30
84°
58°
31
83°
61°
1
77°
66°
2
81°
64°
3
81°
58°
4
82°
57°
5
85°
59°
6
76°
65°
7
85°
63°
8
84°
62°
9
87°
57°
10
86°
69°
11
74°
63°
12
76°
63°
13
78°
63°
14
79°
69°
15
81°
71°
16
83°
72°
17
79°
61°
18
80°
57°
19
81°
59°
20
82°
63°
21
80°
60°
22
77°
60°
23
74°
55°
24
74°
50°
25
77°
49°
26
82°
55°
27
80°
58°
28
80°
54°
29
79°
57°
30
82°
67°
31
86°
68°
1
89°
72°
2
91°
72°
3
92°
70°
4
88°
69°
5
83°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Southwest
Southwest's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Southwest. See also: September | October | November.
