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
82°F
Sunny
Sunny, with a high near 82. West wind 5 to 10 mph.
7-day forecast for New London
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 5 to 10 mph W | 0% |
| Tonight | 59°F | Mostly Clear then Areas Of Fog | 0 to 5 mph W | 0% |
| Wednesday | 85°F | Areas Of Fog then Partly Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 64°F | Partly Cloudy | 0 to 5 mph SW | 8% |
| Thursday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 40% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 34% |
| Friday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph W | 22% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 21% |
| Saturday | 85°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 mph W | 48% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 41% |
| Sunday | 86°F | Sunny | 5 mph W | 10% |
| Sunday Night | 65°F | Mostly Clear | 5 mph W | 9% |
| Monday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph W | 26% |
| Monday Night | 62°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 10 mph W | 25% |
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 Aug 4, 2026.