Greenfield, IA Weather & Growing Conditions
Today
82°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 8am. Mostly cloudy. High near 82, with temperatures falling to around 79 in the afternoon. West wind 5 to 9 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Chance Showers And Thunderstorms | 5 to 9 mph W | 41% |
| Tonight | 62°F | Showers And Thunderstorms | 10 mph NNE | 89% |
| Wednesday | 72°F | Showers And Thunderstorms Likely | 9 mph NE | 63% |
| Wednesday Night | 57°F | Chance Rain Showers | 2 to 7 mph NE | 25% |
| Thursday | 80°F | Sunny | 3 mph E | 6% |
| Thursday Night | 62°F | Mostly Clear | 3 mph SE | 5% |
| Friday | 84°F | Sunny | 5 to 8 mph S | 5% |
| Friday Night | 67°F | Mostly Clear | 7 mph S | 9% |
| Saturday | 88°F | Sunny | 6 to 12 mph SSW | 4% |
| Saturday Night | 73°F | Mostly Clear | 10 to 15 mph SSW | 10% |
| Sunday | 89°F | Mostly Sunny | 14 mph S | 10% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms | 14 mph S | 25% |
| Monday | 89°F | Chance Showers And Thunderstorms then Mostly Sunny | 15 mph SSW | 25% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 13 to 16 mph SSE | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greenfield, IA
Last spring frost
Apr 25
First fall frost
Oct 12
Growing season
170 days
Hardiness zone
5b
Explore more for Greenfield, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Greenfield, Ia (2.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.