Chilly Temperatures Continue, Warming Through the Week

FastCast--Monday, Oct. 29 to Wednesday, Nov. 1:

Sunny and chilly weather will continue across Washington state on Sunday and Monday, with lowland highs in the upper 40s to low 50s. Lows will drop to the upper 20s to low 30s, with some regions dropping to the mid 20s, mainly away from the water and closer to the mountains. On Tuesday morning, lows will drop to the low to mid 30s, with partly cloudy conditions expected and highs increasing to the low to mid 50s. Halloween night will be partly cloudy, with temperatures in the upper 30s to low 40s during trick-or-treating time. Lows on Wednesday morning will drop to the upper 30s to low 40s, with highs in the low to mid 50s. The pattern will be changing significantly by Wednesday, with increasing rain through the rest of the week as multiple storms (and potentially atmospheric rivers) move through the region. Stay tuned to the blog as the forecast gets more refined over the coming days!

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Continue reading the full blog below!

The sunny and cold weather will continue for the next couple days across Washington, as we remain under a strong high pressure ridge. However, temperatures will moderate over the coming days, with a stormier pattern expected to begin on Wednesday. Let's take a look at the forecast!

From Sunday to Tuesday, expect lowland highs in the upper 40s to low 50s, with some areas reaching the mid 50s on Tuesday.

We'll start with the European model forecast for lows on Sunday morning, seen below.

Expect Sunday morning's lows to drop to the upper 20s to low 30s across the lowlands, with some areas (away from the water) dropping to the mid 20s. Eastern Washington will drop to the low to mid 20s, except areas from Yakima to the Tri Cities, where temperatures will only drop to the low 30s. The Willamette Valley will drop to the low to mid 30s.

Next, let's take a look at Monday morning's lows, seen below.

On Monday morning, lows in the lowlands will drop to the low 30s, with some areas dropping to the upper 20s, and some areas near the water remaining in the mid 30s. Eastern Washington will drop to the mid 20s to low 30s, and the Willamette Valley will drop to the low to mid 30s.

An increase in low temperatures is clear on Tuesday morning, as seen below.

On Tuesday morning, expect lowland lows in the low to mid 30s, with areas away from the immediate shorelines still dropping to the low 30s. The Willamette Valley will also drop to the mid 30s, and Eastern Washington will be a bit warmer, with lows dropping to the mid 20s to mid 30s. 

Now, let's take a look at the European EPS forecast showing highs and lows for Seattle and Spokane for the next 2 weeks, starting with the Seattle forecast.

Expect a pattern change to a stormier and more active pattern by midweek, with highs returning to the mid to upper 50s, and lows increasing nearly 20°, to the upper 40s to low 50s. From midweek onward, temperatures will remain above average.

Let's compare this to Spokane's forecast, seen below.

Spokane shows a similar trend, just less pronounced than Seattle. By midweek, "cold" weather is over for awhile, with highs reaching the low 50s and lows increasing to the low 40s. Spokane's temperatures will stay near to slightly above average for the foreseeable future.

Finally, below is the European EPS ensemble forecast showing individual ensemble members' predictions for when and how much rain will fall over the next 2 weeks for Seattle. 

Notice that almost every ensemble member shows multiple periods of moderate to heavy rain through at least the first week (and possibly more) of November.

Stay tuned over the coming days as this pattern gets closer and the forecast gets better defined (and enjoy that sun while you can!).