S
M
T
W
T
F
S
30
108°
84°
31
104°
84°
1
103°
83°
2
105°
82°
3
106°
80°
4
106°
81°
5
105°
83°
6
107°
85°
7
107°
83°
8
101°
83°
9
101°
82°
10
102°
80°
11
100°
82°
12
99°
84°
13
100°
83°
14
103°
82°
15
104°
83°
16
100°
81°
17
101°
80°
18
101°
81°
19
103°
76°
20
100°
73°
21
99°
72°
22
Hist. Avg.
99°
76°
23
Hist. Avg.
99°
75°
24
Hist. Avg.
99°
75°
25
Hist. Avg.
98°
74°
26
Hist. Avg.
98°
74°
27
Hist. Avg.
98°
74°
28
Hist. Avg.
97°
73°
29
Hist. Avg.
97°
73°
30
Hist. Avg.
96°
72°
1
Hist. Avg.
96°
72°
2
Hist. Avg.
96°
71°
3
Hist. Avg.
95°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Yuma
Yuma's September 2026 forecast shows daily high temperatures ranging from 99° to 108°, with overnight lows between 72° and 85°. The average high for September is 103° with an average low of 81°. 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.