Newmarket, NH Weather & Growing Conditions
Today
76°F
Mostly Sunny
Mostly sunny. High near 76, with temperatures falling to around 69 in the afternoon. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Mostly Sunny | 5 mph SW | 3% |
| Tonight | 55°F | Partly Cloudy | 5 mph SW | 2% |
| Thursday | 74°F | Mostly Cloudy then Chance Light Rain | 5 to 10 mph SW | 39% |
| Thursday Night | 60°F | Mostly Cloudy then Chance Light Rain | 5 to 10 mph SW | 38% |
| Friday | 70°F | Light Rain | 0 mph | 77% |
| Friday Night | 54°F | Light Rain | 0 to 5 mph E | 92% |
| Saturday | 63°F | Light Rain | 5 mph N | 78% |
| Saturday Night | 43°F | Chance Light Rain | 5 mph N | 35% |
| Sunday | 57°F | Chance Light Rain | 5 to 10 mph W | 30% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph W | 8% |
| Monday | 55°F | Mostly Sunny | 5 to 10 mph W | 14% |
| Monday Night | 33°F | Partly Cloudy | 5 mph W | 13% |
| Tuesday | 57°F | Mostly Sunny | 5 to 10 mph SW | 9% |
| Tuesday Night | 32°F | Partly Cloudy | 5 mph W | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Newmarket, NH
Last spring frost
May 7
First fall frost
Oct 4
Growing season
150 days
Hardiness zone
6a
Explore more for Newmarket, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Durham 2 Ssw, Nh (2.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.