S
M
T
W
T
F
S
30
79°
63°
31
77°
64°
1
81°
68°
2
84°
70°
3
84°
64°
4
81°
63°
5
73°
63°
6
75°
57°
7
73°
54°
8
77°
59°
9
79°
63°
10
72°
66°
11
75°
59°
12
79°
63°
13
75°
63°
14
64°
52°
15
75°
50°
16
87°
69°
17
80°
67°
18
77°
58°
19
78°
64°
20
75°
64°
21
72°
57°
22
69°
55°
23
67°
52°
24
68°
53°
25
70°
50°
26
71°
49°
27
73°
54°
28
74°
53°
29
73°
45°
30
74°
50°
1
73°
51°
2
71°
51°
3
64°
50°
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 64° to 87°, with overnight lows between 45° and 69°. The average high for September is 73° with an average low of 55°. 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.
