Bristol, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bristol, a community in Grafton County, New Hampshire.
Tonight
42°F
Partly Cloudy
Partly cloudy, with a low around 42. Northwest wind 0 to 5 mph.
7-day forecast for Bristol
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Partly Cloudy | 0 to 5 mph NW | 0% |
| Saturday | 64°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 44°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 58°F | Rain Showers | 0 to 5 mph SE | 86% |
| Sunday Night | 48°F | Rain Showers | 0 mph | 80% |
| Monday | 63°F | Mostly Sunny | 0 to 5 mph NW | 2% |
| Monday Night | 44°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Tuesday | 61°F | Partly Sunny | 0 to 5 mph NE | 1% |
| Tuesday Night | 43°F | Mostly Cloudy | 0 mph | 2% |
| Wednesday | 60°F | Mostly Sunny | 0 to 5 mph E | 2% |
| Wednesday Night | 43°F | Mostly Cloudy | 0 to 5 mph E | 8% |
| Thursday | 58°F | Slight Chance Rain Showers | 0 to 5 mph E | 24% |
| Thursday Night | 46°F | Chance Rain Showers | 0 mph | 25% |
| Friday | 64°F | Slight Chance Rain Showers | 0 to 5 mph N | 23% |
Forecast source: National Weather Service (api.weather.gov) for Bristol (43.603, -71.734). Updated through the day.
Growing snapshot for Bristol
Last spring frost
May 21
First fall frost
Sep 26
Growing season
127 days
Hardiness zone
5b
More local growing data for Bristol: nearby ZIP 03222 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Ashland
Bethlehem
Canaan
Enfield
Lebanon
Lincoln
Lisbon
Littleton
Mountain Lakes
North Haverhill
North Woodstock
Plymouth
Woodsville
Climate data from the nearest NOAA station, Grafton, Nh (9.2 mi from Bristol). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.