Greenfield, IA Weather & Growing Conditions
Today
50°F
Cloudy
Cloudy. High near 50, with temperatures falling to around 48 in the afternoon. West wind 15 to 18 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Cloudy | 15 to 18 mph W | 6% |
| Tonight | 42°F | Mostly Cloudy then Chance Rain Showers | 13 mph W | 29% |
| Thursday | 51°F | Chance Rain Showers then Cloudy | 13 mph NW | 33% |
| Thursday Night | 39°F | Mostly Cloudy | 6 to 9 mph N | 8% |
| Friday | 50°F | Partly Sunny | 3 to 7 mph N | 1% |
| Friday Night | 31°F | Partly Cloudy | 2 mph E | 0% |
| Saturday | 53°F | Mostly Sunny | 5 mph SW | 0% |
| Saturday Night | 36°F | Mostly Clear | 6 mph WSW | 0% |
| Sunday | 59°F | Sunny | 6 mph W | 0% |
| Sunday Night | 39°F | Clear | 7 mph SW | 0% |
| Monday | 64°F | Sunny | 7 to 12 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 6 mph WNW | 0% |
| Tuesday | 64°F | Mostly Sunny | 5 mph NNW | 0% |
| Tuesday Night | 44°F | Partly Cloudy | 5 mph ESE | 1% |
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 Nov 4, 2026.