S
M
T
W
T
F
S
30
107°
80°
31
108°
81°
1
109°
82°
2
109°
77°
3
108°
78°
4
109°
80°
5
108°
82°
6
107°
81°
7
108°
80°
8
107°
81°
9
105°
80°
10
Hist. Avg.
103°
72°
11
Hist. Avg.
103°
72°
12
Hist. Avg.
102°
72°
13
Hist. Avg.
102°
72°
14
Hist. Avg.
102°
72°
15
Hist. Avg.
102°
72°
16
Hist. Avg.
102°
72°
17
Hist. Avg.
101°
71°
18
Hist. Avg.
101°
71°
19
Hist. Avg.
101°
71°
20
Hist. Avg.
101°
70°
21
Hist. Avg.
100°
70°
22
Hist. Avg.
100°
70°
23
Hist. Avg.
100°
69°
24
Hist. Avg.
100°
69°
25
Hist. Avg.
99°
68°
26
Hist. Avg.
99°
68°
27
Hist. Avg.
99°
68°
28
Hist. Avg.
99°
67°
29
Hist. Avg.
98°
67°
30
Hist. Avg.
98°
67°
1
Hist. Avg.
98°
66°
2
Hist. Avg.
98°
66°
3
Hist. Avg.
97°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ad Diriyah
Ad Diriyah's September 2026 forecast shows daily high temperatures ranging from 105° to 109°, with overnight lows between 77° and 82°. The average high for September is 108° with an average low of 80°. 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 Ad Diriyah. See also: October | November | December.