Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Newsletters
  • Advertising
  • Superior Accuracy™
Dangerous heat wave to expand east early this week, affecting 170 million people. Details here Chevron right

Merrimac, NH

89°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Merrimac

New Hampshire

89°
No results found.
Try searching for a city, zip code or point of interest.
settings
Merrimac, NH Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Newsletters

Advertising

Superior Accuracy™

Video

Winter Center
Today Hourly Daily Radar MinuteCast Monthly Air Quality Health & Activities
Monday, June 23

Day

6/23
95°Hi
RealFeel® 105°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
RealFeel Shade™ 101°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
Breezy in the morning; otherwise, partly sunny, hot and humid; one of the hottest days of the year so far; stay cool and well hydrated
alerts

Extreme Heat Warning

11:00 AM Monday - 8:00 PM Tuesday

Max UV Index10 (Very High)

AccuLumen Brightness Index™8 (Bright)

WindS 10 mph

Wind Gusts29 mph

Probability of Precipitation2%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover41%

Morning

Afternoon

Night

6/23
73°Lo
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Mainly clear, warm and humid
alerts

Extreme Heat Warning

11:00 AM Monday - 8:00 PM Tuesday

WindSW 6 mph

Wind Gusts15 mph

Probability of Precipitation0%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover19%

Evening

Overnight

Sun & Moon

15 hrs 20 mins
Rise 5:08 AM
Set 8:28 PM
Waning Crescent
Rise 2:53 AM
Set 7:11 PM

Temperature History

6/23
High
Low
Forecast
95°
73°
Average
81°
58°
Last Year
88°
61°
Record
92°
2020
39°
1958

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Dangerous heat wave to envelop 170 million Americans through late June

2 hours ago

Severe Weather

Storms sweep Northeast, teen struck by lightning in Central Park

2 days ago

Severe Weather

Severe storms to continue riding edge of heat dome into new week

1 hour ago

Astronomy

Meteorological summer vs. astronomical summer explained

6 days ago

Astronomy

NASA raises chance for asteroid to hit moon

2 days ago

 More Stories

Featured Stories

Astronomy

Summer solstice: Everything to know about the year's longest day

2 days ago

Health

‘Nimbus’ COVID-19 variant arrives in U.S. after China surge

2 days ago

Severe Weather

Rare high-elevation tornado confirmed at Pikes Peak

4 days ago

Weather News

First methane-powered sea spiders found crawling on the ocean floor

4 days ago

Weather News

‘Dragon Man’ DNA revelation puts a face to group of ancient humans

2 days ago
World North America United States New Hampshire Merrimac

Weather Near Merrimac:

  • Boston, MA
  • Dorchester, MA
  • Worcester, MA
Company
Proven Superior Accuracy About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2025 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information

...

...

...