Henniker, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Henniker, a community in Merrimack County, New Hampshire.
This Afternoon
70°F
Mostly Cloudy
Mostly cloudy. High near 70, with temperatures falling to around 63 in the afternoon. South wind 0 to 5 mph.
7-day forecast for Henniker
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Cloudy | 0 to 5 mph S | 11% |
| Tonight | 47°F | Mostly Cloudy | 0 mph | 5% |
| Wednesday | 75°F | Mostly Sunny | 0 to 5 mph SW | 5% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Thursday | 70°F | Scattered Rain Showers | 0 to 10 mph SW | 50% |
| Thursday Night | 57°F | Scattered Rain Showers | 0 to 5 mph SW | 25% |
| Friday | 68°F | Light Rain Likely | 0 mph | 63% |
| Friday Night | 51°F | Light Rain | 0 mph | 78% |
| Saturday | 61°F | Light Rain Likely | 0 to 5 mph NW | 68% |
| Saturday Night | 41°F | Chance Light Rain | 5 mph NW | 52% |
| Sunday | 57°F | Chance Light Rain | 5 to 10 mph W | 25% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph W | 11% |
| Monday | 55°F | Slight Chance Light Rain | 5 to 10 mph W | 20% |
| Monday Night | 33°F | Slight Chance Light Rain | 5 mph W | 19% |
Forecast source: National Weather Service (api.weather.gov) for Henniker (43.182, -71.819). Updated through the day.
Growing snapshot for Henniker
Last spring frost
May 6
First fall frost
Oct 1
Growing season
146 days
Hardiness zone
5b
More local growing data for Henniker: nearby ZIP 03242 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Bradford
Concord
Contoocook
Franklin
Hooksett
Loudon
New London
Pittsfield
Suncook
Tilton Northfield
Warner
Climate data from the nearest NOAA station, Hopkinton Lake, Nh (4.5 mi from Henniker). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.