S
M
T
W
T
F
S
30
94°
64°
31
93°
65°
1
83°
59°
2
85°
58°
3
87°
61°
4
84°
63°
5
89°
61°
6
90°
62°
7
93°
62°
8
97°
65°
9
102°
72°
10
105°
74°
11
101°
73°
12
99°
58°
13
86°
56°
14
88°
58°
15
91°
60°
16
90°
62°
17
92°
64°
18
91°
64°
19
90°
61°
20
90°
64°
21
92°
63°
22
92°
64°
23
94°
63°
24
92°
65°
25
88°
59°
26
88°
62°
27
88°
61°
28
83°
56°
29
84°
60°
30
84°
59°
1
88°
61°
2
87°
58°
3
85°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fresno
Fresno's September 2026 forecast shows daily high temperatures ranging from 83° to 99°, with overnight lows between 56° and 65°. The average high for September is 89° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Fresno. See also: October | November | December.
