S
M
T
W
T
F
S
30
85°
60°
31
86°
67°
1
85°
71°
2
92°
73°
3
91°
70°
4
84°
69°
5
79°
60°
6
79°
59°
7
79°
60°
8
82°
65°
9
81°
65°
10
80°
61°
11
77°
57°
12
74°
59°
13
75°
58°
14
75°
56°
15
74°
54°
16
74°
59°
17
75°
56°
18
72°
57°
19
78°
58°
20
78°
59°
21
76°
58°
22
76°
57°
23
73°
54°
24
70°
54°
25
75°
56°
26
75°
56°
27
74°
50°
28
64°
48°
29
63°
46°
30
64°
46°
1
62°
45°
2
67°
53°
3
69°
52°
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 62° to 92°, with overnight lows between 45° and 73°. The average high for September is 75° with an average low of 57°. 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.
