Malheur Harney Lake Klamath Jackson Josephine Curry Coos Douglas Crook Deschutes Lane Baker Grant Wheeler Union Wallowa Umatilla Morrow Gilliam Sherman Jefferson Wasco Linn Marion Clackamas Benton Polk Lincoln Hood River Multnomah Yamhill Washington Tillamook Columbia Clatsop

View Large Map

March Madness is here!  CoCoRaHS March Madness!  This is our big recruiting month where each state competes for who can recruit the most new CoCoRaHS Observers.  Now's the time to talk to that weather-geek friend about joining CoCoRaHS.  Talk to your friends, your neighbors, that weird person down the street, etc.  All they need to start is a CoCoRaHS rain gauge and an interest in weather.  Your reports really do great work, filling gaps in weather observations and therefore improving forecasts for the future. 

Thank you all for all your great work this winter!  Keep up the great work!

How do I join:
It's easy to sign-up to become an observer - click on Join CoCoRaHS and complete the on-line application form. 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:
Besides a desire to observe and record the weather, the only thing you will need is a standard 4" rain gauge.  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 Oregon, but between Oregon and the other states that participate in the program! The rain gauge will cost you $30, plus $9 for shipping, and may be purchased at WeatherYourWay.com or AmbientWeather.com.

NOTE:Several people have asked about the possibility of buying the rain gauge from a local vendor. Unfortunately, after several hours of checking, there are no such local vendors.


Unfortunately at this time we can do live training sessions.  We do however recommend going through training slides found here

Here are some training videos you can watch, too:

State Climate Office:

Oregon Climate Service, Oregon State University, Corvallis, OR

Regional NWS Offices:

Portland, OR

Medford, OR

Pendleton, OR

Boise, ID