S
M
T
W
T
F
S
30
100°
75°
31
100°
76°
1
95°
67°
2
99°
70°
3
97°
76°
4
94°
75°
5
96°
71°
6
99°
72°
7
97°
71°
8
99°
73°
9
96°
73°
10
96°
73°
11
101°
74°
12
99°
71°
13
101°
72°
14
93°
72°
15
91°
69°
16
85°
67°
17
93°
67°
18
82°
63°
19
93°
63°
20
94°
63°
21
93°
67°
22
84°
61°
23
76°
57°
24
80°
55°
25
81°
56°
26
84°
57°
27
84°
56°
28
85°
54°
29
85°
55°
30
84°
53°
1
83°
48°
2
79°
52°
3
82°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in White Sands National Monument
White Sands National Monument's September 2026 forecast shows daily high temperatures ranging from 76° to 94°, with overnight lows between 48° and 67°. The average high for September is 84° with an average low of 57°. 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 White Sands National Monument. See also: October | November | December.