S
M
T
W
T
F
S
30
107°
88°
31
104°
88°
1
105°
85°
2
105°
82°
3
104°
81°
4
105°
82°
5
99°
85°
6
105°
85°
7
107°
79°
8
109°
86°
9
106°
87°
10
110°
87°
11
105°
88°
12
104°
86°
13
106°
85°
14
105°
85°
15
100°
85°
16
102°
83°
17
101°
80°
18
101°
76°
19
102°
72°
20
101°
75°
21
101°
81°
22
99°
70°
23
102°
73°
24
95°
80°
25
99°
74°
26
103°
77°
27
91°
82°
28
82°
70°
29
91°
70°
30
97°
71°
1
99°
73°
2
100°
75°
3
101°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Yuma
Yuma's September 2026 forecast shows daily high temperatures ranging from 82° to 101°, with overnight lows between 70° and 77°. The average high for September is 95° with an average low of 73°. 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 Yuma. See also: October | November | December.