Click on a day for an hourly weather forecast
The temperatures in Farmington in September are comfortable with low of 14°C and and high up to 27°C.
You can expect about 3 to 8 days of rain in Farmington during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Farmington in September 2025.
If you’re planning to visit Farmington in the near future, we highly recommend that you review the 14 day weather forecast for Farmington before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -5° | 5 | 19 | 8 | 50 mm | Awful | Farmington in January |
| February | 7° / -3° | 5 | 17 | 7 | 49 mm | Bad | Farmington in February |
| March | 13° / 2° | 4 | 24 | 3 | 34 mm | Bad | Farmington in March |
| April | 18° / 5° | 2 | 26 | 1 | 26 mm | Good | Farmington in April |
| May | 23° / 9° | 2 | 29 | 0 | 30 mm | Perfect | Farmington in May |
| June | 30° / 15° | 1 | 29 | 0 | 17 mm | Good | Farmington in June |
| July | 32° / 19° | 3 | 28 | 0 | 70 mm | Good | Farmington in July |
| August | 30° / 18° | 4 | 27 | 0 | 80 mm | Good | Farmington in August |
| September | 27° / 14° | 4 | 26 | 0 | 64 mm | Perfect | Farmington in September |
| October | 19° / 7° | 3 | 28 | 0 | 43 mm | Good | Farmington in October |
| November | 12° / 2° | 3 | 25 | 2 | 35 mm | Bad | Farmington in November |
| December | 5° / -4° | 5 | 18 | 8 | 50 mm | Awful | Farmington in December |