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
98°
67°
13
85°
63°
14
87°
58°
15
91°
62°
16
86°
57°
17
85°
56°
18
89°
58°
19
91°
61°
20
89°
59°
21
89°
60°
22
93°
65°
23
98°
66°
24
97°
65°
25
95°
66°
26
85°
60°
27
84°
59°
28
87°
59°
29
86°
60°
30
84°
59°
1
88°
61°
2
86°
62°
3
88°
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 84° to 98°, with overnight lows between 56° and 66°. 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.
