Bristol, NH Weather & Growing Conditions
Overnight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Partly Cloudy | 0 mph | 2% |
| Wednesday | 73°F | Mostly Sunny | 0 to 5 mph SW | 3% |
| Wednesday Night | 50°F | Partly Cloudy | 0 mph | 2% |
| Thursday | 67°F | Light Rain Likely | 0 to 5 mph S | 71% |
| Thursday Night | 55°F | Chance Light Rain | 0 mph | 39% |
| Friday | 67°F | Chance Light Rain | 0 mph | 39% |
| Friday Night | 51°F | Light Rain Likely | 0 mph | 70% |
| Saturday | 60°F | Light Rain Likely | 0 mph | 56% |
| Saturday Night | 43°F | Chance Light Rain | 0 to 5 mph NW | 42% |
| Sunday | 54°F | Chance Light Rain | 0 to 5 mph NW | 35% |
| Sunday Night | 36°F | Partly Cloudy then Slight Chance Light Rain | 0 to 5 mph W | 15% |
| Monday | 51°F | Slight Chance Light Rain | 5 to 10 mph W | 22% |
| Monday Night | 33°F | Slight Chance Light Rain then Partly Cloudy | 5 mph W | 16% |
| Tuesday | 53°F | Mostly Sunny | 5 to 10 mph W | 12% |
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
5b
Explore more for Bristol, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Grafton, Nh (9.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.