S
M
T
W
T
F
S
27
87°
57°
28
89°
55°
29
75°
63°
30
80°
56°
1
71°
55°
2
60°
54°
3
73°
54°
4
72°
50°
5
74°
53°
6
83°
54°
7
82°
51°
8
82°
52°
9
82°
52°
10
82°
56°
11
86°
58°
12
87°
57°
13
82°
55°
14
82°
50°
15
79°
48°
16
65°
45°
17
59°
46°
18
67°
47°
19
71°
49°
20
71°
48°
21
73°
42°
22
70°
46°
23
65°
38°
24
66°
41°
25
66°
43°
26
68°
46°
27
67°
46°
28
66°
45°
29
66°
45°
30
64°
44°
31
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Fort Sumner
Fort Sumner's October 2026 forecast shows daily high temperatures ranging from 59° to 87°, with overnight lows between 38° and 58°. The average high for October is 72° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Fort Sumner. See also: November | December | January.