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  "path": "/2026/06/short-warm-period-followed-by-cool-wet.html",
  "publishedAt": "2026-06-21T16:16:56.670Z",
  "site": "https://cliffmass.blogspot.com",
  "textContent": "**We are about to warm up into the mid-80s this week in the west and 90s in eastern Washington, followed by a profound cool-down and plenty of precipitation.**\n\nConsider the latest predictions for temperature in Seattle and the Tri-Cities below.\n\nTemperatures peak on Wednesday, before dropping off the proverbial cliff by the end of the week.\n\n**Classic for our region, where cool ocean air is always close by.**\n\n\n\n\nYou can see the predicted regional temperature evolution spatially below.\n\n\n\n\nThe forecast high temperatures for today are quite moderate over western Washington (highs in the 70s), while warmer temperatures are found in the Columbia Basin.\n\n\n\n\n\n\n\n\n\n\nBut by Tuesday (at 5 PM), the reds (80s) have spread into western Washington. Still cool along the coast and over NW Washington.\n\n\n\n\n\n\n\nBut by Thursday, a radical cooling has occurred in the west, with temperatures only getting into the 60s over the lowlands. Eastern Washington has also cooled.\n\n\n\n\n\n\n\nThe cause of this transition? The approach of a strong upper level tough of low pressure (see forecast at 500 hPa, about 18,000 ft) below. Wow.\n\n\n\n\n\n\n\n**Are you planning a hike after Thursday? Bring some rain gear.**\n\n\n\n\nTo illustrate our soggy future, below are the predicted precipitation totals through Sunday morning. Yikes. Several inches in the mountains. Even eastern Washington gets wet!\n\n\n\n\n\n\n\nThe NOAA Extended (6-10 day forecast) is wetter than normal over our region (see below)\n\n\n\n\n\n\n\n**The timing of this precipitation, right before our dry season, is superb for providing soil moisture, filling reservoirs, and reducing wildfire threat.**",
  "title": "Short Warm Period Followed by Cool Wet Weather",
  "updatedAt": "2026-06-21T16:16:56.670Z"
}