What is today's weather forecast for Sullivan, NH?

Today's forecast for Sullivan shows a high of 26 degrees and a low of 14 degrees Fahrenheit. Mostly sunny, with a high near 26.

What is the 7-day weather forecast for Sullivan, NH?

The 7-day forecast for Sullivan shows highs from 18 to 42 degrees and lows from 7 to 25 degrees Fahrenheit. Expect precipitation on 1 day with chances of 20% or higher.

Will it rain in Sullivan, NH this week?

Yes, rain is possible in Sullivan this week. Precipitation chances: Saturday (30% chance).

How accurate is the Sullivan weather forecast?

WeatherForYou provides highly accurate Sullivan forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Sullivan, NH Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

19°F
Feels Like 19°F

Humidity 53% Dew Point 5°F Wind WNW 1 MPH Gusts 1 Barometer 29.28 in.

Solar Rad 29 w/m²

Report from a personal weather station 5.6 mi. SW of central Sullivan
at 8:26 AM Fri, Dec 12, 2025

Point Forecast at a Glance

FriDec 12

SatDec 13

SunDec 14

MonDec 15

TueDec 16

WedDec 17

ThuDec 18

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures dip from 26°F to a low of 18°F mid-week, then warm to 42°F. Mostly dry conditions with only one day showing snow chances.

Climate Context

This week's forecast shows temperatures running 7°F below the historical average for December. Normal highs for this period are around 36°F with lows around 19°F.

This Date in Weather History

1960 - The first of three Middle Atlantic snowstorms produced a foot of snow at Baltimore MD. A pre-winter blizzard struck the northeastern U.S. producing wind gusts as high as 51 mph, along with 16 inches of snow at Nantucket MA, and 20 inches at Newark NJ.

Sullivan, NH 7 Day Weather Forecast Details

Friday Dec 12

Day: Mostly sunny, with a high near 26. West wind 10 to 15 mph, with gusts as high as 30 mph.

Night: Partly cloudy, with a low around 14. West wind 5 to 10 mph becoming light southwest. Winds could gust as high as 20 mph.

Saturday Dec 13

Day: Mostly cloudy, with a high near 29. South wind 5 to 10 mph, with gusts as high as 20 mph.

Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 19. West wind around 5 mph.

Sunday Dec 14

Day: Mostly cloudy, with a high near 24. Northwest wind 5 to 10 mph.

Night: Partly cloudy, with a low around 7.

Monday Dec 15

Day: Mostly sunny, with a high near 18.

Night: Mostly cloudy, with a low around 12.

Tuesday Dec 16

Day: Mostly sunny, with a high near 26.

Night: Mostly cloudy, with a low around 14.

Wednesday Dec 17

Day: Mostly cloudy, with a high near 35.

Night: Mostly cloudy, with a low around 25.

Thursday Dec 18

Day: Mostly cloudy, with a high near 42.

About Sullivan, NH

Sullivan is a town in Cheshire County, New Hampshire, United States. The population was 658 at the 2020 census. It includes the villages of East Sullivan and Ellisville.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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