What is today's weather forecast for Merrimack, NH?

Today's forecast for Merrimack shows a high of 44 degrees and a low of 23 degrees Fahrenheit. Partly sunny, with a high near 44.

What is the 7-day weather forecast for Merrimack, NH?

The 7-day forecast for Merrimack shows highs from 44 to 52 degrees and lows from 23 to 34 degrees Fahrenheit. Expect precipitation on 2 days with chances of 20% or higher.

Will it rain in Merrimack, NH this week?

Yes, rain is possible in Merrimack this week. Precipitation chances: Tuesday (60% chance), Wednesday (50% chance).

How accurate is the Merrimack weather forecast?

WeatherForYou provides highly accurate Merrimack forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Merrimack, NH Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

33°F
Feels Like 33°F

Humidity 80% Dew Point 27°F Wind Calm Barometer 30.25 in.768.3 mm

Solar Rad 159 w/m² UV Index 0.71

Report from a personal weather station 0.4 miles SSE of central Merrimack
at 9:45 AM Thu, Nov 20, 2025

Point Forecast at a Glance

ThuNov 20

FriNov 21

SatNov 22

SunNov 23

MonNov 24

TueNov 25

WedNov 26

50%

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 44°F to 52°F. Some rain possible with at least 2 days showing precipitation chances of 20% or higher.

Climate Context

Temperatures are expected to be near normal for this time of year, with highs around 49°F and lows around 30°F.

This Date in Weather History

1900 - An unusual tornado outbreak in the Lower Mississippi Valley resulted in 73 deaths and extensive damage across Arkansas, Mississippi and Tennessee.

Merrimack, NH 7 Day Weather Forecast Details

Thursday Nov 20

Day: Partly sunny, with a high near 44. Calm wind.

Night: Partly cloudy, with a low around 23. Calm wind.

Friday Nov 21

Day: Mostly sunny, with a high near 50. Calm wind becoming southwest around 5 mph in the afternoon.

Night: Mostly cloudy, with a low around 32. Southwest wind around 5 mph becoming calm.

Saturday Nov 22

Day: Mostly sunny, with a high near 46. Northwest wind 5 to 10 mph.

Night: Mostly clear, with a low around 24.

Sunday Nov 23

Day: Mostly sunny, with a high near 44.

Night: Partly cloudy, with a low around 30.

Monday Nov 24

Day: Mostly sunny, with a high near 49.

Night: Partly cloudy, with a low around 28.

Tuesday Nov 25

Day: Mostly cloudy, with a high near 46.

Night: Showers likely. Cloudy, with a low around 34. Chance of precipitation is 60%.

Wednesday Nov 26

Day: A 50 percent chance of showers. Mostly cloudy, with a high near 52.

About Merrimack, NH

Merrimack is a town in Hillsborough County, New Hampshire, United States. The population was 26,632 as of the 2020 census. There are four villages in the town: Merrimack Village (formerly known as Souhegan Village), Thorntons Ferry, Reeds Ferry, and South Merrimack. It also contains the census-designated place of East Merrimack.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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