Marlborough, NH Weather & Growing Conditions
Today
80°F
Sunny
Sunny, with a high near 80. West wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Sunny | 5 to 10 mph W | 0% |
| Tonight | 58°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Wednesday | 81°F | Partly Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 64°F | Partly Cloudy | 0 to 5 mph SW | 8% |
| Thursday | 83°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 53% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 45% |
| Friday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 28% |
| Friday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 26% |
| Saturday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 38% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 34% |
| Sunday | 84°F | Sunny | 0 to 5 mph W | 11% |
| Sunday Night | 65°F | Mostly Clear | 0 to 5 mph SW | 10% |
| Monday | 83°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 18% |
| Monday Night | 63°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph W | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marlborough, NH
Last spring frost
May 14
First fall frost
Oct 1
Growing season
138 days
Hardiness zone
6a
Explore more for Marlborough, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Keene, Nh (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.