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South Merrimack, New Hampshire Weather Forecast
South Merrimack, New Hampshire Weather
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Weather Forecast for South Merrimack, New Hampshire : Hillsborough County
Issued: 1:04 pm EDT Oct 29, 2025 Latitude: 42.8048095 Longitude: -71.5550686 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Cloudy on Tonight 60% chance of rain on Thursday 70% chance of rain on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday
Low: 36°F High: 56°F High: 60°F High: 54°F High: 53°F High: 56°F High: 56°F High: 54°F
Low: 49°F Low: 41°F Low: 32°F Low: 30°F Low: 40°F Low: 34°F  
Mostly Cloudy Rain Rain Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
FITCHBURG - (KFIT)
48°
Cloudy
as of 5:10 PM EDST
Rel. Humidity: 70%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 3000ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 36. Northeast wind around 5 mph becoming calm in the evening.

60% chance of rain Thursday Thursday... A slight chance of showers between 9am and 2pm, then rain likely after 2pm. Cloudy, with a high near 56. Light north wind becoming east 5 to 10 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

100% chance of rain Thursday Night Thursday Night... Rain. Low around 49. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

70% chance of rain Friday Friday... Showers likely, mainly before 10am. Mostly cloudy, with a high near 60. South wind around 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

30% chance of rain Friday Night Friday Night... A chance of showers between 9pm and 5am. Mostly cloudy, with a low around 41. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 54.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 32.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 53.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 30.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 56.

40% chance of rain Monday Night Monday Night... A 40 percent chance of showers. Mostly cloudy, with a low around 40.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 56.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 34.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 54.

Sun Almanac for South Merrimack, New Hampshire
Sunrise: 07:17 AM
Sunset: 5:43 PM
Civil Sunrise:06:48 AM
Civil Sunset: 6:12 PM
Nautical Sunrise: 06:15 AM
Nautical Sunset: 6:45 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 7:18 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.