Hourly Weather Forecast - Merrimack, NH

12 AM
17°F
10%
5mph
WSW
Cloudy
Humidity
74%
Feels like
10°F
Dew Point
11°F
1 AM
17°F
10%
5mph
WSW
Cloudy
Humidity
75%
Feels like
10°F
Dew Point
11°F
2 AM
17°F
10%
5mph
WSW
Cloudy
Humidity
76%
Feels like
9°F
Dew Point
11°F
3 AM
16°F
10%
5mph
WSW
Cloudy
Humidity
79%
Feels like
9°F
Dew Point
11°F
4 AM
16°F
10%
5mph
WSW
Cloudy
Humidity
83%
Feels like
8°F
Dew Point
11°F

Snow and ice forecast through Friday A.M.

Multiple Snow Threats Across the Northern U.S.

Multiple systems will bring snow across the Northern U.S. through the end of the week.

Rainfall Forecast for Northwest through Friday A.M.

Unrelenting Rains Soak the Northwest

Today's Weather Outlook

Today's Weather Outlook

Weekly Drought Map for December 4, 2025

Active Week of Weather Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide