S
M
T
W
T
F
S
26
100°
78°
27
99°
79°
28
98°
79°
29
100°
78°
30
100°
79°
31
99°
79°
1
100°
78°
2
100°
79°
3
99°
79°
4
98°
78°
5
100°
79°
6
101°
79°
7
100°
78°
8
99°
78°
9
100°
79°
10
99°
78°
11
100°
77°
12
100°
79°
13
99°
79°
14
100°
78°
15
101°
79°
16
100°
79°
17
99°
78°
18
98°
79°
19
99°
79°
20
100°
78°
21
100°
77°
22
98°
78°
23
95°
77°
24
99°
77°
25
100°
78°
26
99°
78°
27
100°
77°
28
99°
78°
29
98°
76°
30
96°
77°
31
96°
78°
1
98°
78°
2
98°
77°
3
97°
72°
4
96°
72°
5
92°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mission
Mission's August 2026 forecast shows daily high temperatures ranging from 92° to 101°, with overnight lows between 72° and 79°. The average high for August is 99° with an average low of 78°. 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 Mission. See also: September | October | November.
