New London Middlesex New Haven Fairfield Windham Tolland Hartford Litchfield

View Large Map

Welcome to Connecticut CoCoRaHS!

The Nutmeg State became the 45th state to join CoCoRaHS on July 1, 2009

We currently have 120 observers who report daily precipitation.

Have Questions or Would Like More Information?

Contact Joe Dellicarpini, Southern New England Coordinator,
or contact one your Regional Coordinator listed below

IT'S BACK! Check out the latest SNE CoCoRaHS Newsletter!
(Thanks to our new Editor, Matt Spies, CT-FR-9)

November, 2015: Nov2015SNE.pdf
October, 2015: Oct2015SNE.pdf
September, 2015:  Sep2015SNE.pdf
August, 2015:  Aug2015SNE.pdf

We are always looking for new observers. Sign up today!!!
It's easy to sign up. To join CoCoRaHS click here: Join CoCoRaHS

How Do I Join CoCoRaHS?

It's easy to sign up. To join CoCoRaHS click here: Join CoCoRaHS

You can take the observer training online.
 Training sessions are held periodically.
We will post dates of training sessions here.

Once you sign up, you will receive a login and password. After you have a rain gauge and begin making observations, you can log in and report them. Your precipitation observations will start showing up daily on our county maps.

What Do I Need to Join?

We strongly encourage you to purchase one of these 4" rain gauges. This will ensure that the data collected by CoCoRaHS observers is not only consistent throughout Connecticut, but between Connecticut and the rest of the country! 

The rain gauge costs $30 plus shipping and may be purchased at:

How Is CoCoRaHS Data Used in Connecticut?

Some users of CoCoRaHS data include the National Weather Service (NWS), State and Local agencies, the media, and the public. For example, the NWS Northeast River Forecast Center uses daily precipitation data to supplement precipitation analyses, which are used to help predict river flows throughout the region. NWS Albany, New York City, and Taunton use the data for drought analysis, post-event reviews, and to assist with the issuance of Flood Watches and Flood Warnings.

Did You Know???

Connecticut averages between 40 and 50 inches of precipitation each year
Record for 24 hour rainfall: 12.77 inches in Burlington, Aug 19, 1955
Record maximum annual precipitation: 78.53 inches in Burlington, 1955
Record minimum annual precipitation: 23.60 inches in Baltic, 1965


If you have any questions about CoCoRaHS in Connecticut, email
Joe Dellicarpini, Southern New England Coordinator
Or contact one of the Regional Coordinators listed below

Connecticut CoCoRaHS Regional Coordinators

Northwest:  John Quinlan
Northeast:  Bill Simpson
Southern:  Tim Morrin

 Connecticut CoCoRaHS is a collaboration between:
 Colorado State University, National Weather Service Offices in Albany, New York City, and Taunton, and the Connecticut Department of Emergency Management and Homeland Security