Weather WorldLake Sunapee, NH 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Lake Sunapee, NH Weather Forecast
Lake Sunapee, NH Weather Forecast Date: 215 PM EDT Tue Aug 25 2026
The area/counties/county of: Sullivan, including the cities of: Claremont, Cornish, Unity, Croydon, Goshen, Grantham, Lempster, Newport, and Charlestown.or toggle through each period.
Rest of Today... Partly sunny with a slight chance of showers and thunderstorms. Highs in the mid 70s. Light and variable winds. Chance of rain 20%.
Tonight... Mostly clear. A slight chance of showers in the evening. Lows in the mid 50s. Light and variable winds. Chance of rain 20%.
Wednesday... Partly sunny. Highs in the upper 70s. Light and variable winds.
Wednesday Night... Partly cloudy. Lows in the upper 50s. Light and variable winds.
Thursday... Partly sunny. Showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. South winds around 10 mph. Chance of rain 70%.
Thursday Night... Showers with a chance of thunderstorms in the evening, then showers likely after midnight. Lows in the lower 60s. Chance of rain 80%.
Friday... Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 50%.
Friday Night... Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the mid 50s. Chance of rain 40%.
Saturday... Mostly sunny. Highs in the upper 70s.
Saturday Night... Mostly clear. Lows in the lower 50s.
Sunday... Mostly sunny. Highs in the upper 70s.
Sunday Night... Partly cloudy. Lows in the upper 50s.
POP = Probability of Precipitation
Lake Sunapee Radar Loop
Use the map search tool if you want to place a location marker on the radar map...