S
M
T
W
T
F
S
26
79°
64°
27
81°
66°
28
85°
66°
29
85°
65°
30
84°
67°
31
83°
66°
1
81°
66°
2
85°
67°
3
86°
67°
4
85°
66°
5
83°
65°
6
84°
66°
7
85°
65°
8
79°
60°
9
78°
59°
10
78°
59°
11
80°
65°
12
78°
65°
13
83°
66°
14
84°
66°
15
84°
64°
16
79°
63°
17
79°
56°
18
79°
56°
19
83°
64°
20
85°
63°
21
83°
64°
22
85°
63°
23
85°
63°
24
80°
62°
25
78°
62°
26
78°
57°
27
77°
59°
28
77°
61°
29
78°
60°
30
83°
59°
31
84°
62°
1
84°
62°
2
83°
61°
3
83°
54°
4
76°
52°
5
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fresno
Fresno's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 52° and 67°. The average high for August is 82° 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 Fresno. See also: September | October | November.