FastCast—Monday, May 23 to Friday, May 27:
After a beautiful weekend with the first above average temperatures in weeks, we will return to mainly below average temperatures and eventually another round of spring rain. Highs in the lowlands reached the upper 60s to mid 70s on Friday, the warmest day of May! Expect temperatures to decrease significantly on Monday, only peaking in the low 60s. Light showers are possible on Monday as well, totaling up to 0.1”. Temperatures increase a bit on Tuesday and Wednesday, although conditions will stay cloudy. Expect highs in the mid 60s on Tuesday and mid to upper 60s on Wednesday (near average!). Thursday will also be in the mid 60s, with rain arriving later in the day. From late Thursday through Friday night, expect 0.5-1.1 inches of rain around the lowlands. Friday’s highs will be on the cool side, likely in the upper 50s. Low temperatures throughout the week are trending warmer, likely in the upper 40s to low 50s, close to average for this time of year.
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Continue reading the full blog below!
Sunday was the warmest day of May! Highs reached the mid 70s in the South & Central Sound and the low 70s to the north. For the first time this month, temperatures were actually a few degrees above average around the lowlands! However, this pleasant weather won’t last.
Clouds increased through the day on Sunday, and temperatures will be 10-15 degrees cooler on Monday, with highs only reaching the low 60s. The HRRR model below shows the change in temperature from Sunday to Monday.
Monday’s highs around the Puget Sound area will be 10-15 degrees cooler than Sunday.
Light showers are expected on Monday, only totaling around 0.1 inches in the lowlands, but up to 0.25 inches in the mountains.
Slightly warmer temperatures attempt a return on Wednesday, as seen below in the European model forecast.
The lowlands will reach the mid 60s, with a possibility of temperatures in the upper 60s at times. Eastern Washington will be quite warm, with highs in the low to mid 80s in the Columbia Basin.
Despite the warmer temperatures, it will remain cloudy over Western Washington. Late on Thursday, the next round of rain will begin. The European model forecast through the end of Memorial Day Weekend is below.
In typical Western Washington fashion, Memorial Day Weekend will be wet. Generally, the majority of the rain will fall between Friday and Sunday. Totals will be highest in the mountains (2-3 inches), but will reach 1-1.5 inches in the lowlands and on the coast. Eastern Washington will pick up 0.3-1.1 inches as well.
Stay tuned for more information about the Memorial Day Weekend forecast and rainy pattern coming up.
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