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December 11th, 2025 :: 11:49 am EST   

Local Weather Report for
Merrimack
New Hampshire, United States

 Current Merrimack Weather Conditions Updated December 11th at 10:53 am 
Mostly Sunny
Temperature:30°F Dew Point:10°F
Barometer:29.44 inHg Wind:N 30 Mph
Humidity:42.1% Visibility:0M
 
 Merrimack Weather Forecast Summary  
 
Today
Dec 11th
Friday
Dec 12th
Saturday
Dec 13th
Sunday
Dec 14th
Monday
Dec 15th
Cloudy Sunny Cloudy Cloudy Cloudy
37°F
29°F
19°F
35°F
24°F
29°F
19°F
24°F
18°F
 
 Merrimack Detailed Weather Forecast  
 
Thursday, December 11th, 2025
Afternoon Temperature: 23°F
Sunny. Windy at times.
Evening Temperature: 20°F
Clear. Windy at times.
Friday, December 12th, 2025
Overnight Temperature: 19°F
Clear. Windy at times.
Morning Temperature: 27°F
Sunny. Windy at times.
Afternoon Temperature: 27°F
Sunny. Windy at times.
Evening Temperature: 26°F
Clear. Windy at times.
Saturday, December 13th, 2025
Overnight Temperature: 25°F
Cloudy.
Morning Temperature: 33°F
Cloudy.
Afternoon Temperature: 31°F
Cloudy.
Evening Temperature: 30°F
Cloudy.
Sunday, December 14th, 2025
Overnight Temperature: 25°F
Cloudy.
Morning Temperature: 28°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 24°F
Sunny with cloudy periods.
Evening Temperature: 20°F
Clear. Windy at times.
Monday, December 15th, 2025
Overnight Temperature: 19°F
Clear. Windy at times.
Morning Temperature: 22°F
Sunny. Windy at times.
Afternoon Temperature: 22°F
Cloudy. Windy at times.
Evening Temperature: 24°F
Cloudy.
Tuesday, December 16th, 2025
Overnight Temperature: 25°F
Cloudy with clear periods.
Morning Temperature: 29°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 26°F
Cloudy.
Evening Temperature: 25°F
Cloudy.
Wednesday, December 17th, 2025
Overnight Temperature: 26°F
Mostly clear.
Morning Temperature: 35°F
Cloudy. Windy at times.
Afternoon Temperature: 37°F
Cloudy. Windy at times.
Evening Temperature: 35°F
Cloudy. Windy at times.
Thursday, December 18th, 2025
Overnight Temperature: 35°F
Cloudy.
Morning Temperature: 39°F
Cloudy.
Afternoon Temperature: 37°F
Cloudy with a chance of showers. Showers possibly mixed with wet flurries.
Evening Temperature: 42°F
Cloudy. Windy at times.
Friday, December 19th, 2025
Overnight Temperature: 41°F
Cloudy. Windy at times.
Morning Temperature: 45°F
A mix of cloud and sun. Windy.
Afternoon Temperature: 32°F
Sunny with cloudy periods. Windy.
Evening Temperature: 29°F
Clear. Windy at times.





 

  [ Local Weather Report ]
Litchfield, NH 
10:56 AM  30°F
Overcast
 
Manchester, NH 
10:53 AM  30°F
Mostly Sunny
 
Londonderry, NH 
10:53 AM  30°F
Mostly Sunny
 
Nashua, NH 
10:56 AM  30°F
Overcast
 
Amherst, NH 
 
Hudson, NH 
10:56 AM  30°F
Overcast
 
Milford, NH 
 
Derry, NH 
10:53 AM  30°F
Mostly Sunny
 
Mont Vernon, NH 
 
Hollis, NH 
10:56 AM  30°F
Overcast

 
This WeatherCity Weather Forecast for Merrimack, New Hampshire, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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