Greenfield, IA Weather & Growing Conditions
This Afternoon
48°F
Cloudy
Cloudy. High near 48, with temperatures falling to around 46 in the afternoon. West wind around 16 mph, with gusts as high as 24 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Cloudy | 16 mph W | 11% |
| Tonight | 41°F | Cloudy then Chance Rain Showers | 13 mph WNW | 25% |
| Thursday | 50°F | Chance Rain Showers then Cloudy | 10 to 14 mph NNW | 28% |
| Thursday Night | 37°F | Mostly Cloudy | 7 to 10 mph N | 4% |
| Friday | 48°F | Partly Sunny | 2 to 7 mph NNE | 4% |
| Friday Night | 29°F | Partly Cloudy | 2 mph ESE | 0% |
| Saturday | 53°F | Mostly Sunny | 2 to 6 mph SW | 0% |
| Saturday Night | 35°F | Mostly Clear | 6 mph WSW | 0% |
| Sunday | 60°F | Sunny | 5 mph W | 0% |
| Sunday Night | 38°F | Clear | 3 to 7 mph SW | 0% |
| Monday | 65°F | Sunny | 7 to 13 mph SW | 0% |
| Monday Night | 42°F | Clear | 3 to 7 mph W | 0% |
| Tuesday | 63°F | Sunny | 5 mph N | 1% |
| Tuesday Night | 42°F | Partly Cloudy | 3 mph NNE | 3% |
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.