New London, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New London, a city in Henry County, Iowa.
Overnight
50°F
Mostly Cloudy
Mostly cloudy, with a low around 50. West wind around 10 mph, with gusts as high as 25 mph.
7-day forecast for New London
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 10 mph W | 7% |
| Wednesday | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph W | 18% |
| Wednesday Night | 45°F | Mostly Cloudy | 10 mph W | 6% |
| Thursday | 55°F | Rain Showers Likely | 10 mph W | 56% |
| Thursday Night | 42°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 17% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 6% |
| Friday Night | 31°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 57°F | Sunny | 5 mph W | 1% |
| Sunday Night | 36°F | Clear | 0 mph | 0% |
| Monday | 64°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 40°F | Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 0 to 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for New London (40.923, -91.401). Updated through the day.
Growing snapshot for New London
Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
163 days
Hardiness zone
5b
More local growing data for New London: nearby ZIP 52645 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mt Pleasant 1 Ssw, Ia (8.7 mi from New London). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.