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.
Tonight
42°F
Partly Cloudy
Partly cloudy, with a low around 42. South wind 0 to 5 mph.
7-day forecast for Mountain Lakes
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Partly Cloudy | 0 to 5 mph S | 1% |
| Sunday | 53°F | Rain | 0 to 5 mph SE | 84% |
| Sunday Night | 43°F | Rain Likely then Patchy Fog | 0 to 5 mph NE | 68% |
| Monday | 60°F | Patchy Fog then Partly Sunny | 5 mph N | 0% |
| Monday Night | 37°F | Mostly Cloudy | 0 to 5 mph N | 0% |
| Tuesday | 63°F | Mostly Sunny | 0 mph | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 0 mph | 0% |
| Wednesday | 66°F | Mostly Sunny | 0 mph | 0% |
| Wednesday Night | 39°F | Partly Cloudy | 0 mph | 0% |
| Thursday | 65°F | Mostly Sunny then Slight Chance Rain Showers | 0 mph | 15% |
| Thursday Night | 41°F | Chance Rain Showers | 0 mph | 25% |
| Friday | 64°F | Chance Rain Showers | 0 mph | 31% |
| Friday Night | 44°F | Chance Rain Showers | 0 to 5 mph N | 33% |
| Saturday | 66°F | Chance Rain Showers | 5 mph N | 27% |
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 Sep 20, 2026.