Bristol, NH Weather & Growing Conditions
Today
75°F
Mostly Sunny
Mostly sunny. High near 75, with temperatures falling to around 66 in the afternoon. Southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Sunny | 0 to 5 mph SW | 3% |
| Tonight | 49°F | Partly Cloudy | 0 mph | 2% |
| Thursday | 69°F | Light Rain Likely | 0 to 5 mph S | 69% |
| Thursday Night | 54°F | Chance Light Rain | 0 to 5 mph SW | 35% |
| Friday | 68°F | Chance Light Rain | 0 mph | 42% |
| Friday Night | 49°F | Light Rain Likely | 0 mph | 70% |
| Saturday | 61°F | Light Rain Likely | 0 to 5 mph N | 56% |
| Saturday Night | 40°F | Chance Light Rain | 0 to 5 mph NW | 40% |
| Sunday | 54°F | Chance Light Rain then Partly Sunny | 5 to 10 mph NW | 33% |
| Sunday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 13% |
| Monday | 50°F | Slight Chance Light Rain | 5 to 10 mph W | 21% |
| Monday Night | 29°F | Slight Chance Light Rain then Partly Cloudy | 5 mph W | 16% |
| Tuesday | 53°F | Mostly Sunny | 5 to 10 mph W | 9% |
| Tuesday Night | 29°F | Partly Cloudy | 5 mph W | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Bristol, NH
Last spring frost
May 21
First fall frost
Sep 26
Growing season
127 days
Hardiness zone
5a
Explore more for Bristol, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Grafton, Nh (5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.