Farmington, IA Weather & Growing Conditions
Overnight
70°F
Patchy Fog
Patchy fog after 4am. Partly cloudy, with a low around 70. South wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Patchy Fog | 0 to 5 mph S | 13% |
| Saturday | 86°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 10 mph S | 18% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 5 mph NW | 70% |
| Sunday | 73°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph N | 73% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 5 mph NE | 64% |
| Monday | 64°F | Showers And Thunderstorms Likely | 5 mph NE | 64% |
| Monday Night | 54°F | Chance Rain Showers | 5 mph NE | 44% |
| Tuesday | 62°F | Chance Rain Showers | 0 to 5 mph NE | 42% |
| Tuesday Night | 49°F | Partly Cloudy | 0 mph | 4% |
| Wednesday | 66°F | Mostly Sunny | 0 mph | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 0 mph | 3% |
| Thursday | 69°F | Partly Sunny | 0 mph | 6% |
| Thursday Night | 57°F | Partly Cloudy | 0 mph | 4% |
| Friday | 72°F | Partly Sunny | 0 mph | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Farmington, IA
Last spring frost
Apr 17
First fall frost
Oct 22
Growing season
187 days
Hardiness zone
6a
Explore more for Farmington, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Donnellson, Ia (8.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.