S
M
T
W
T
F
S
30
81°
53°
31
77°
54°
1
82°
51°
2
83°
54°
3
86°
53°
4
82°
50°
5
82°
50°
6
86°
53°
7
86°
53°
8
86°
53°
9
85°
52°
10
85°
52°
11
84°
51°
12
84°
51°
13
83°
50°
14
78°
50°
15
83°
48°
16
82°
49°
17
82°
48°
18
81°
49°
19
76°
49°
20
74°
48°
21
76°
47°
22
73°
46°
23
78°
46°
24
77°
47°
25
74°
46°
26
70°
45°
27
70°
45°
28
71°
44°
29
69°
44°
30
69°
42°
1
70°
43°
2
68°
42°
3
68°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gallup
Gallup's September 2026 forecast shows daily high temperatures ranging from 68° to 86°, with overnight lows between 41° and 54°. The average high for September is 78° with an average low of 49°. 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 Gallup. See also: October | November | December.
