New Hampton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Hampton, a city in Chickasaw County, Iowa.
Overnight
49°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. Low around 49, with temperatures rising to around 52 overnight. Southwest wind around 12 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for New Hampton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Chance Rain Showers | 12 mph SW | 41% |
| Wednesday | 52°F | Rain Showers Likely | 12 to 17 mph W | 72% |
| Wednesday Night | 43°F | Rain Showers Likely | 13 to 16 mph W | 73% |
| Thursday | 50°F | Chance Rain Showers | 15 mph NW | 47% |
| Thursday Night | 36°F | Mostly Cloudy | 8 to 13 mph N | 12% |
| Friday | 46°F | Mostly Sunny | 3 to 9 mph N | 2% |
| Friday Night | 28°F | Mostly Clear | 2 mph N | 0% |
| Saturday | 49°F | Sunny | 1 to 6 mph W | 0% |
| Saturday Night | 34°F | Mostly Clear | 6 mph W | 1% |
| Sunday | 55°F | Sunny | 8 mph W | 3% |
| Sunday Night | 36°F | Mostly Clear | 6 mph SW | 0% |
| Monday | 59°F | Sunny | 6 to 12 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 7 mph W | 0% |
| Tuesday | 58°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for New Hampton (43.056, -92.315). Updated through the day.
Growing snapshot for New Hampton
Last spring frost
May 2
First fall frost
Oct 5
Growing season
155 days
Hardiness zone
5a
More local growing data for New Hampton: nearby ZIP 50659 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, New Hampton, Ia (3.6 mi from New Hampton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.