S
M
T
W
T
F
S
30
101°
78°
31
101°
80°
1
100°
80°
2
100°
79°
3
85°
75°
4
93°
76°
5
99°
80°
6
100°
78°
7
99°
79°
8
96°
80°
9
95°
79°
10
97°
79°
11
96°
78°
12
98°
77°
13
95°
77°
14
94°
75°
15
92°
73°
16
89°
69°
17
93°
75°
18
85°
70°
19
87°
74°
20
92°
74°
21
92°
73°
22
91°
72°
23
92°
73°
24
92°
73°
25
91°
71°
26
90°
67°
27
81°
61°
28
81°
61°
29
80°
62°
30
85°
66°
1
89°
68°
2
89°
62°
3
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Irving
Irving's September 2026 forecast shows daily high temperatures ranging from 79° to 100°, with overnight lows between 59° and 80°. The average high for September is 91° with an average low of 72°. 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 Irving. See also: October | November | December.
