New London, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New London, a community in Merrimack County, New Hampshire.
Today
63°F
Sunny
Sunny, with a high near 63. North wind 0 to 5 mph.
7-day forecast for New London
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Sunny | 0 to 5 mph N | 0% |
| Tonight | 43°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 54°F | Rain Showers Likely then Rain | 5 mph SE | 97% |
| Sunday Night | 43°F | Rain then Rain Showers Likely | 0 to 5 mph NE | 85% |
| Monday | 60°F | Mostly Sunny | 5 mph N | 1% |
| Monday Night | 39°F | Mostly Cloudy | 5 mph N | 0% |
| Tuesday | 59°F | Partly Sunny | 5 mph NE | 0% |
| Tuesday Night | 40°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Wednesday | 60°F | Mostly Sunny | 5 to 10 mph E | 0% |
| Wednesday Night | 40°F | Mostly Cloudy | 0 to 5 mph E | 8% |
| Thursday | 58°F | Chance Rain Showers | 5 mph NE | 30% |
| Thursday Night | 42°F | Chance Rain Showers | 5 mph NE | 30% |
| Friday | 60°F | Chance Rain Showers | 5 mph N | 31% |
| Friday Night | 43°F | Chance Rain Showers | 5 to 10 mph NE | 32% |
Forecast source: National Weather Service (api.weather.gov) for New London (43.416, -71.986). Updated through the day.
Growing snapshot for New London
Last spring frost
May 2
First fall frost
Oct 9
Growing season
158 days
Hardiness zone
5b
More local growing data for New London: nearby ZIP 03257 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Bradford
Concord
Contoocook
Franklin
Henniker
Hooksett
Loudon
Pittsfield
Suncook
Tilton Northfield
Warner
Climate data from the nearest NOAA station, Mt Sunapee, Nh (7.4 mi from New London). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.