S
M
T
W
T
F
S
30
102°
71°
31
102°
74°
1
101°
74°
2
101°
71°
3
99°
70°
4
101°
68°
5
103°
72°
6
103°
72°
7
100°
70°
8
103°
70°
9
101°
76°
10
86°
72°
11
92°
70°
12
93°
69°
13
96°
71°
14
98°
70°
15
100°
71°
16
99°
72°
17
97°
72°
18
99°
69°
19
97°
70°
20
97°
69°
21
82°
64°
22
81°
57°
23
82°
56°
24
81°
60°
25
80°
60°
26
82°
60°
27
79°
58°
28
82°
57°
29
79°
57°
30
81°
56°
1
80°
56°
2
76°
50°
3
77°
56°
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 76° to 97°, with overnight lows between 50° and 70°. The average high for September is 82° with an average low of 59°. 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.
