Berlin, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Berlin, a city in Coos County, New Hampshire.
Tonight
37°F
Mostly Clear
Mostly clear, with a low around 37. Northwest wind 0 to 10 mph, with gusts as high as 25 mph.
7-day forecast for Berlin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 37°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Saturday | 61°F | Areas Of Frost then Sunny | 0 to 5 mph N | 0% |
| Saturday Night | 39°F | Mostly Cloudy | 0 mph | 0% |
| Sunday | 59°F | Rain Showers Likely | 0 to 5 mph SE | 70% |
| Sunday Night | 42°F | Rain Showers Likely then Mostly Cloudy | 0 mph | 63% |
| Monday | 61°F | Mostly Sunny | 0 to 5 mph NW | 1% |
| Monday Night | 38°F | Mostly Cloudy | 0 to 5 mph N | 1% |
| Tuesday | 62°F | Partly Sunny | 0 to 5 mph NE | 1% |
| Tuesday Night | 38°F | Partly Cloudy | 0 to 5 mph E | 1% |
| Wednesday | 63°F | Mostly Sunny | 0 to 5 mph E | 1% |
| Wednesday Night | 39°F | Partly Cloudy | 0 to 5 mph E | 9% |
| Thursday | 63°F | Partly Sunny then Slight Chance Rain Showers | 0 mph | 18% |
| Thursday Night | 42°F | Chance Rain Showers | 0 mph | 25% |
| Friday | 65°F | Chance Rain Showers | 0 to 5 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for Berlin (44.484, -71.277). Updated through the day.
Growing snapshot for Berlin
Last spring frost
May 14
First fall frost
Sep 30
Growing season
135 days
Hardiness zone
4b
More local growing data for Berlin: nearby ZIP 03570 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Berlin, Nh (4 mi from Berlin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.