Hartwick, IA Weather & Growing Conditions
Today
52°F
Cloudy
Cloudy. High near 52, with temperatures falling to around 50 in the afternoon. West southwest wind around 15 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 52°F | Cloudy | 15 mph WSW | 13% |
| Tonight | 43°F | Cloudy | 13 mph W | 11% |
| Thursday | 54°F | Chance Rain Showers | 12 mph NW | 36% |
| Thursday Night | 37°F | Mostly Cloudy | 9 mph N | 10% |
| Friday | 49°F | Mostly Sunny | 5 to 8 mph N | 2% |
| Friday Night | 28°F | Partly Cloudy | 3 mph N | 0% |
| Saturday | 52°F | Mostly Sunny | 3 mph WNW | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 mph W | 1% |
| Sunday | 58°F | Sunny | 6 mph W | 2% |
| Sunday Night | 34°F | Clear | 3 mph SW | 0% |
| Monday | 63°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 63°F | Sunny | 3 mph NW | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 2 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hartwick, IA
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
165 days
Hardiness zone
5a
Explore more for Hartwick, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Belle Plaine, Ia (6.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.