Historical weather data, all-time temperature records, and monthly climate averages for Lake Morton-Berrydale, WA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Lake Morton-Berrydale runs cool and damp, with a typical high of 56° and more than a 6-in-10 chance of rain. The date has seen wild swings over 117 years of records — from a balmy 76° in 1952 down to a freezing 25° back in 1936.
Lake Morton-Berrydale is a place of genuine extremes: it has baked at 112° during the historic Pacific Northwest heat dome of June 2021, and bottomed out at 0° in February 1989. A single October day in 2003 dumped 5.5 inches of rain, while a February 1916 storm buried the area under 14 inches of snow.
Summer is the clear sweet spot here — late July peaks at an average high of 78°, while both January and December hover in the low 40s. If you're avoiding rain, skip late November, which is the wettest stretch of the year at over 2 inches per week. Spring and fall offer mild temperatures in the 50s–60s, but expect frequent showers.