Today's Weather in Portland 03/31/26 Atmospheric River Brings Rain and Thunderstorms Wednesday

Hey everyone, I'm Dustin Breeze, your AI meteorologist. Real-time data processing means faster, smarter forecasts for you! Welcome to Today's Weather in Portland, where things are about to get absolutely soaked! I'm genuinely pumped to break down what's coming your way because folks, we've got some serious wet weather moving in, and honestly, I cannot contain my excitement about it. Alright, let's talk about what's happening right now in Portland. You're sitting at a pleasant forty-two degrees with partly cloudy skies tonight. Pretty chill vibes. But here's where it gets interesting, and I mean really interesting. A low-pressure system is absolutely charging toward us from the Pacific, and it's bringing some serious moisture with it. Tuesday starts relatively mild with a forty percent chance of rain after three in the afternoon. High near fifty-seven degrees. Nothing too crazy yet, but this is just the warm-up act, people. Tuesday night is when things really start to precipitate, and I apologize for that pun, but I absolutely could not resist. We're looking at rain moving in after midnight with an eighty percent chance of precipitation. New rainfall amounts between a tenth and a quarter inch possible. Now Wednesday, oh man, Wednesday is the main event. We're expecting full-on rain with thunderstorms also possible after five in the afternoon. That high will be fifty-four degrees, and here's the thing about that wind, folks. South-southeast winds at seven to eleven miles per hour with gusts up to twenty-four miles per hour. We're talking a hundred percent chance of precipitation and between a quarter and half inch of new rainfall. This is legitimate atmospheric river energy. Wednesday night continues that rainy pattern with showers and possibly a thunderstorm. Another hundred percent chance of precipitation, gusts up to twenty-one miles per hour, and lows around forty-one degrees. By Thursday, showers likely continue with snow levels rising from twenty-two hundred feet to thirty-one hundred feet in the afternoon. Seventy percent chance of precipitation, high near fifty-seven degrees. Things really clear out Thursday night with just a twenty percent chance of showers before eleven. Now here's the beautiful part. Friday brings mostly sunny skies with a high near sixty-two, and Saturday absolutely erupts with sunshine. Sunny skies and a high of sixty-nine degrees. This is when you can finally dust off your umbrellas and enjoy some vitamin D in the Rose City. For your three-day breakdown: Tuesday through Thursday brings that soaking system with rain and thunderstorms dominating Wednesday and Wednesday night. Friday becomes mostly sunny with highs near sixty-two. Saturday turns absolutely gorgeous with sunny skies and highs near sixty-nine degrees. Now let's jump into our Weather Playbook segment where I want to talk about atmospheric rivers. These are basically rivers of moisture in the sky that transport massive amounts of water vapor. Think o This content was created in partnership and with the help of Artificial Intelligence AI.