S
M
T
W
T
F
S
30
81°
62°
31
81°
61°
1
82°
56°
2
74°
54°
3
73°
54°
4
74°
53°
5
74°
53°
6
76°
60°
7
81°
60°
8
78°
59°
9
74°
59°
10
78°
58°
11
80°
58°
12
80°
59°
13
81°
60°
14
80°
49°
15
72°
49°
16
69°
50°
17
71°
49°
18
71°
47°
19
70°
48°
20
70°
50°
21
77°
51°
22
76°
54°
23
76°
46°
24
76°
45°
25
71°
45°
26
70°
46°
27
73°
52°
28
74°
52°
29
74°
43°
30
70°
43°
1
66°
45°
2
67°
46°
3
71°
49°
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 66° to 82°, with overnight lows between 43° and 62°. The average high for September is 75° with an average low of 52°. 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.
