Hillsborough, NH Weather & Growing Conditions
Today
73°F
Sunny
Sunny. High near 73, with temperatures falling to around 66 in the afternoon. Southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 0 to 5 mph SW | 2% |
| Tonight | 54°F | Partly Cloudy | 5 mph SW | 2% |
| Thursday | 68°F | Light Rain Likely | 5 to 10 mph SW | 56% |
| Thursday Night | 57°F | Chance Light Rain | 0 to 5 mph SW | 39% |
| Friday | 68°F | Light Rain Likely | 0 mph | 63% |
| Friday Night | 51°F | Light Rain | 0 mph | 80% |
| Saturday | 61°F | Light Rain Likely | 0 to 5 mph N | 61% |
| Saturday Night | 41°F | Chance Light Rain | 0 to 5 mph NW | 41% |
| Sunday | 56°F | Chance Light Rain then Partly Sunny | 5 to 10 mph NW | 29% |
| Sunday Night | 34°F | Partly Cloudy | 5 mph W | 9% |
| Monday | 52°F | Slight Chance Light Rain | 5 to 10 mph W | 16% |
| Monday Night | 31°F | Partly Cloudy | 5 mph W | 12% |
| Tuesday | 55°F | Mostly Sunny | 5 to 10 mph W | 6% |
| Tuesday Night | 31°F | Partly Cloudy | 5 mph W | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hillsborough, NH
Last spring frost
May 9
First fall frost
Oct 5
Growing season
148 days
Hardiness zone
6a
Explore more for Hillsborough, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Weare 2 Ne, Nh (8.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.