Mountain Lakes, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mountain Lakes, a community in Grafton County, New Hampshire.
Today
71°F
Mostly Sunny
Mostly sunny. High near 71, with temperatures falling to around 65 in the afternoon. South wind 0 to 5 mph.
7-day forecast for Mountain Lakes
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Mostly Sunny | 0 to 5 mph S | 3% |
| Tonight | 52°F | Partly Cloudy | 0 to 5 mph S | 2% |
| Thursday | 65°F | Light Rain Likely | 5 mph S | 74% |
| Thursday Night | 54°F | Light Rain Likely | 0 to 5 mph S | 71% |
| Friday | 65°F | Chance Light Rain | 0 mph | 43% |
| Friday Night | 49°F | Light Rain Likely | 0 mph | 55% |
| Saturday | 58°F | Chance Light Rain | 0 mph | 48% |
| Saturday Night | 40°F | Chance Light Rain | 0 to 5 mph NW | 51% |
| Sunday | 51°F | Chance Light Rain | 0 to 5 mph NW | 40% |
| Sunday Night | 33°F | Mostly Cloudy then Slight Chance Light Rain | 0 to 5 mph W | 20% |
| Monday | 47°F | Chance Light Rain | 5 mph W | 28% |
| Monday Night | 29°F | Slight Chance Light Rain then Mostly Cloudy | 0 to 5 mph W | 22% |
| Tuesday | 50°F | Partly Sunny then Slight Chance Light Rain | 5 mph SW | 21% |
| Tuesday Night | 28°F | Slight Chance Light Rain | 0 to 5 mph W | 22% |
Forecast source: National Weather Service (api.weather.gov) for Mountain Lakes (44.125, -71.958). Updated through the day.
Growing snapshot for Mountain Lakes
Last spring frost
May 15
First fall frost
Sep 28
Growing season
133 days
Hardiness zone
5a
More local growing data for Mountain Lakes: nearby ZIP 03774 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Ashland
Bethlehem
Bristol
Canaan
Enfield
Lebanon
Lincoln
Lisbon
Littleton
North Haverhill
North Woodstock
Plymouth
Woodsville
Climate data from the nearest NOAA station, Benton 5 Sw, Nh (4.9 mi from Mountain Lakes). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.