Stay in touch with the coast.
Sign up for our newsletter »

Casco Bay Weather Forecast

Portland & Casco Bay Weather Forecast, Marine Forecast

We’ve Expanded our Weather Pages! The weather pages that you’ve seen on Mainboats.com are now hosted on our national website, USHarbors.com. There you’ll find the onshore and marine forecasts that you’ve come to rely on, an animated weather radar that you can easily make full-screen (we are weather geeks and make no apologies for it), a wind meteogram that lets you see at a glance what the breeze will be doing, and nearby weather buoy data. CLICK HERE to visit the new Portland & Casco Bay weather pages, now hosted on USHarbors.com While you’re checking the weather on USHarbors, make sure to check out the other information on USHarbors.com — tide charts for 1,200 harbors coast to coast, business listings for hundreds of the finest coastal companies, and a steady stream of Local Knowledge for your favorite harbors. No matter what part of the coast you love, USHarbors.com is the one site you’ll want to check every day!

Share this article: