New Jersey
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View additional CoCoRaHS precipitation and snow maps here

Welcome to NJ CoCoRaHS!

The Garden State is delighted to participating in the growing CoCoRaHS network. NJ CoCoRaHS observers provide important information about precipitation that are used by meteorologists, hydrologists, farmers, water resource managers, and your friends and neighbors. Anyone with an interest in the weather or the environment is invited to participate.

For more information on the NJ CoCoRaHS chapter, please contact one of the state coordinators.

What do I need to participate

All that's needed to be a CoCoRaHS participant is the desire to watch and report weather conditions, access to an internet-connected computer, the appropriate measurement tools a 4" diameter plastic rain gauge and a ruler, and most importantly, the desire to watch and report weather conditions.

The rain gages are available for purchase from WeatherYourWay or Ambient Weather for around $28 plus shipping.

How do I Join

Signing up to become a CoCoRaHS observer is easy. Just click on the Join CoCoRaHS link and complete the application form. The application form will ask you for your station coordinates, which can be estimated from websites such as After applying, you will receive a login and password. Once you have a rain gauge, you can log in to report your observations, which will then begin appearing on the tables and maps!


Training is provided and required for CoCoRaHS observers. Training is available through written instructions on the CoCoRaHS website, a training slide show, or preferably, in group training sessions that will be held at several locations around NJ over the coming months. Announcements of training sessions will be made below.

****We're happy to announce that we'll be holding an observer training session at 6:30 PM on Tuesday, September 30th, at Duke Farms in Hillsborough. Directions to Duke Farms are available here. The session should last around 2 hours. If you're interested in attending, please be sure to mark your calendars and register for the training session here. We'll also bring rain gauges for sale for those who are interested ($30, which saves you the shipping costs from purchasing online), so let us know if you'd like for us to reserve one for you. If you are new to the program or if you'd just like to brush up on your "observing technique," please consider attending! ****

NJ CoCoRaHS Partners

Thanks to our NJ CoCoRaHS partners!