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
73°F
Mostly Sunny
Mostly sunny. High near 73, with temperatures falling to around 65 in the afternoon. Southwest wind around 5 mph.
7-day forecast for New London
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 5 mph SW | 2% |
| Tonight | 51°F | Partly Cloudy | 5 mph SW | 2% |
| Thursday | 67°F | Light Rain Likely | 5 mph SW | 70% |
| Thursday Night | 55°F | Chance Light Rain | 0 to 5 mph SW | 34% |
| Friday | 67°F | Chance Light Rain | 0 mph | 46% |
| Friday Night | 49°F | Light Rain Likely | 0 mph | 71% |
| Saturday | 60°F | Light Rain Likely | 0 to 5 mph N | 56% |
| Saturday Night | 41°F | Chance Light Rain | 5 to 10 mph NW | 39% |
| Sunday | 54°F | Chance Light Rain then Partly Sunny | 5 to 10 mph NW | 32% |
| Sunday Night | 34°F | Partly Cloudy | 5 mph W | 13% |
| Monday | 49°F | Slight Chance Light Rain | 5 to 10 mph W | 22% |
| Monday Night | 31°F | Slight Chance Light Rain then Partly Cloudy | 5 mph W | 15% |
| Tuesday | 53°F | Mostly Sunny | 5 to 10 mph W | 7% |
| Tuesday Night | 31°F | Partly Cloudy | 5 to 10 mph W | 7% |
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 Nov 4, 2026.