Monday Showers Give Way to a Wet and Snowy Week Ahead

Today’s Bottom Line: Scattered showers and thunderstorms are possible this afternoon and evening, with about a 50% chance of precipitation. Temperatures will hover around 58°F with light west-southwest winds. Nothing too dramatic—just typical April weather keeping us honest.

Today’s shower activity is being driven by a weak weather disturbance moving through the region. The good news? By late afternoon, a transient ridge of high pressure should begin building overhead, which means showers will become less widespread across the Portland metro area. If you’re planning outdoor activities this morning or early afternoon, you’ve got a decent window before things get wetter.

If you need to get yard work done, I’d suggest tackling it earlier in the day rather than waiting. Same goes for any grilling plans—you might squeeze in some time before the showers pick up. And if you’re heading to the gorge or into the foothills, keep an eye on conditions; orographic lift will enhance shower chances in those elevated areas.

The Big Picture: A Significant System Arrives Tuesday

Here’s where things get serious. A much stronger frontal system is moving in late Tuesday through Wednesday, and the National Weather Service has upgraded the Winter Storm Watch to a Winter Storm Warning for the Cascades above 2,500 feet. We’re talking 12 to 20 inches of snow from Tuesday afternoon through early Thursday morning on Mt. Hood and the surrounding peaks.

For those of us in the valley, expect widespread rain Tuesday and Tuesday night, with 0.25 to 0.5 inches possible Tuesday and another 0.75 to 1 inch Tuesday night. Winds will gust up to 28-30 mph, so secure anything loose outside. There’s also a small (~5%) chance of wet snow above 1,000 feet if the system dips colder than expected—something to monitor if you’re driving over the passes.

If you’re planning a Cascade trip this week, check road conditions frequently. Winter driving conditions could develop quickly.

Gear Up for the Rain

With several days of significant precipitation ahead, now’s the time to make sure you’ve got the essentials. A quality rain jacket and waterproof boots will keep you comfortable whether you’re commuting, walking the dog, or hitting a trail on a drier afternoon. An umbrella is always handy to have on the porch for those quick trips outside.

Looking Ahead

Showers taper off mid to late week, but cooler overnight temperatures follow—frost concerns will increase, so protect any tender plants. The good news? By Saturday, we’re expecting drier conditions and temperatures trending higher. That’s when you can finally plan that outdoor adventure.

Stay dry out there, neighbors!