S
M
T
W
T
F
S
26
79°
62°
27
78°
62°
28
78°
68°
29
79°
69°
30
79°
69°
31
83°
68°
1
84°
67°
2
83°
68°
3
84°
69°
4
83°
68°
5
84°
68°
6
84°
67°
7
83°
68°
8
84°
69°
9
84°
69°
10
85°
68°
11
86°
66°
12
86°
67°
13
84°
66°
14
81°
68°
15
82°
68°
16
84°
67°
17
80°
66°
18
81°
62°
19
79°
63°
20
81°
64°
21
80°
65°
22
81°
63°
23
82°
64°
24
81°
65°
25
81°
65°
26
Hist. Avg.
82°
63°
27
Hist. Avg.
82°
63°
28
Hist. Avg.
82°
63°
29
Hist. Avg.
82°
63°
30
Hist. Avg.
82°
63°
31
Hist. Avg.
82°
63°
1
Hist. Avg.
82°
63°
2
Hist. Avg.
82°
63°
3
Hist. Avg.
82°
63°
4
Hist. Avg.
82°
63°
5
Hist. Avg.
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Mira Mesa
Mira Mesa's August 2026 forecast shows daily high temperatures ranging from 78° to 86°, with overnight lows between 62° and 69°. The average high for August is 82° with an average low of 66°. 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 Mira Mesa. See also: September | October | November.