S
M
T
W
T
F
S
26
90°
76°
27
89°
75°
28
90°
74°
29
89°
74°
30
89°
75°
31
90°
74°
1
89°
74°
2
89°
75°
3
90°
74°
4
89°
74°
5
89°
75°
6
90°
75°
7
89°
74°
8
89°
76°
9
91°
76°
10
90°
77°
11
89°
76°
12
90°
77°
13
89°
75°
14
89°
76°
15
91°
76°
16
91°
77°
17
90°
75°
18
89°
76°
19
91°
75°
20
89°
74°
21
90°
75°
22
89°
75°
23
90°
74°
24
91°
75°
25
90°
76°
26
91°
75°
27
90°
76°
28
90°
76°
29
90°
75°
30
89°
74°
31
90°
74°
1
Hist. Avg.
86°
74°
2
Hist. Avg.
86°
74°
3
Hist. Avg.
86°
74°
4
Hist. Avg.
86°
74°
5
Hist. Avg.
86°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in San Miguel
San Miguel's August 2026 forecast shows daily high temperatures ranging from 89° to 91°, with overnight lows between 74° and 77°. The average high for August is 90° with an average low of 75°. 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 San Miguel. See also: September | October | November.