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Waterloo, New Hampshire Weather Forecast
Waterloo, New Hampshire Weather
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Weather Forecast for Waterloo, New Hampshire : Merrimack County
Issued: 12:34 pm EST Dec 22, 2025 Latitude: 43.2895214 Longitude: -71.8548025 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Christmas Day Friday Saturday Sunday Monday
Increasing Clouds on Tonight 90% chance of snow on Tuesday 30% chance of snow on Wednesday Mostly Cloudy on Christmas Day Mostly Cloudy on Friday 30% chance of snow on Saturday 70% chance of snow on Sunday Partly Sunny on Monday
Low: 18°F High: 29°F High: 34°F High: 33°F High: 21°F High: 24°F High: 35°F High: 25°F
Low: 22°F Low: 15°F Low: 10°F Low: 10°F Low: 14°F Low: 15°F  
Increasing Clouds Snow Snow Mostly Cloudy Mostly Cloudy Snow Snow Partly Sunny
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Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 18. West wind around 5 mph becoming calm.

90% chance of snow Tuesday Tuesday... Snow, mainly after 11am. High near 29. Calm wind becoming east around 5 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

70% chance of snow Tuesday Night Tuesday Night... Snow likely, mainly before 2am. Mostly cloudy, with a low around 22. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

30% chance of snow Wednesday Wednesday... A 30 percent chance of snow before 8am. Partly sunny, with a high near 34. Northwest wind 5 to 10 mph.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 15. Calm wind.

Mostly Cloudy on Christmas Day Christmas Day... Mostly cloudy, with a high near 33.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 10.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 21.

60% chance of snow Friday Night Friday Night... Snow likely, mainly between 10pm and midnight. Cloudy, with a low around 10. Chance of precipitation is 60%.

30% chance of snow Saturday Saturday... A 30 percent chance of snow before noon. Mostly cloudy, with a high near 24.

30% chance of snow Saturday Night Saturday Night... A 30 percent chance of snow. Mostly cloudy, with a low around 14.

70% chance of snow Sunday Sunday... Snow likely. Cloudy, with a high near 35. Chance of precipitation is 70%.

50% chance of snow Sunday Night Sunday Night... A 50 percent chance of snow. Mostly cloudy, with a low around 15.

Partly Sunny on Monday Monday... Partly sunny, with a high near 25.

Sun Almanac for Waterloo, New Hampshire
Sunrise: 07:17 AM
Sunset: 4:15 PM
Civil Sunrise:06:45 AM
Civil Sunset: 4:48 PM
Nautical Sunrise: 06:08 AM
Nautical Sunset: 5:24 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 5:59 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.