S
M
T
W
T
F
S
26
93°
59°
27
94°
56°
28
96°
59°
29
97°
61°
30
97°
61°
31
100°
59°
1
102°
59°
2
104°
62°
3
105°
64°
4
101°
64°
5
98°
60°
6
98°
60°
7
100°
64°
8
102°
65°
9
105°
63°
10
100°
60°
11
100°
62°
12
97°
63°
13
92°
62°
14
91°
61°
15
92°
62°
16
93°
61°
17
93°
61°
18
94°
60°
19
91°
62°
20
93°
61°
21
94°
62°
22
94°
62°
23
93°
63°
24
88°
59°
25
89°
60°
26
93°
62°
27
93°
63°
28
92°
63°
29
89°
60°
30
93°
62°
31
94°
62°
1
95°
63°
2
95°
62°
3
91°
62°
4
92°
61°
5
91°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Manteca
Manteca's August 2026 forecast shows daily high temperatures ranging from 88° to 105°, with overnight lows between 59° and 65°. The average high for August is 94° with an average low of 62°. 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 Manteca. See also: September | October | November.