S
M
T
W
T
F
S
30
93°
67°
31
94°
72°
1
90°
63°
2
92°
67°
3
92°
64°
4
91°
68°
5
91°
64°
6
89°
63°
7
88°
61°
8
90°
62°
9
73°
73°
10
89°
67°
11
92°
61°
12
94°
62°
13
93°
63°
14
91°
61°
15
92°
67°
16
89°
66°
17
88°
59°
18
71°
71°
19
88°
62°
20
89°
58°
21
93°
58°
22
86°
61°
23
71°
62°
24
78°
60°
25
79°
63°
26
86°
61°
27
88°
64°
28
86°
56°
29
81°
64°
30
82°
64°
1
79°
54°
2
69°
56°
3
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Marfa
Marfa's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Marfa. See also: October | November | December.