S
M
T
W
T
F
S
26
101°
73°
27
102°
73°
28
102°
74°
29
101°
74°
30
103°
73°
31
103°
74°
1
102°
74°
2
102°
73°
3
101°
74°
4
102°
74°
5
101°
72°
6
102°
73°
7
102°
73°
8
103°
72°
9
103°
73°
10
102°
73°
11
102°
72°
12
101°
71°
13
100°
71°
14
100°
70°
15
99°
71°
16
99°
70°
17
98°
70°
18
98°
69°
19
99°
70°
20
98°
69°
21
99°
69°
22
98°
69°
23
96°
68°
24
98°
62°
25
94°
62°
26
93°
63°
27
93°
63°
28
94°
64°
29
92°
68°
30
92°
66°
31
94°
67°
1
95°
64°
2
91°
61°
3
90°
62°
4
90°
65°
5
92°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Porterville
Porterville's August 2026 forecast shows daily high temperatures ranging from 90° to 103°, with overnight lows between 61° and 74°. The average high for August is 98° with an average low of 69°. 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 Porterville. See also: September | October | November.
