S
M
T
W
T
F
S
30
86°
54°
31
84°
57°
1
85°
58°
2
87°
59°
3
89°
56°
4
82°
51°
5
83°
54°
6
83°
54°
7
85°
56°
8
88°
54°
9
85°
57°
10
87°
55°
11
87°
53°
12
86°
54°
13
85°
55°
14
86°
48°
15
79°
52°
16
79°
53°
17
81°
53°
18
76°
52°
19
77°
49°
20
76°
49°
21
76°
44°
22
77°
45°
23
77°
49°
24
80°
45°
25
80°
46°
26
81°
49°
27
81°
50°
28
80°
40°
29
73°
41°
30
72°
46°
1
75°
48°
2
79°
47°
3
78°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Farmington
Farmington's September 2026 forecast shows daily high temperatures ranging from 72° to 89°, with overnight lows between 40° and 59°. The average high for September is 81° with an average low of 51°. 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 Farmington. See also: October | November | December.
