While it’s been summery warm across much of the United States through the Memorial Day weekend and this week, there appears to be plenty of cool on the way.

Here were the highs from yesterday. Mid 90s all the way to North Dakota with 80s once again reaching the still icy shores of Lake Superior…

Below is the current upper pattern with trough digging down the West Coast, increasing the depth of the marine layer down the California coast while a responsive ridges pokes up into south-central Canada. As a result, 90s got all the way to Saskatchewan and Manitoba but note the cut off low over Louisiana that continues to bring BIG RAINS.

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500mb height anomalies.

Warm 5,000ft temps.

Is this a sign of hot in the medium to longer term? Not according to the CFSv2 week 1-4.

The model shows current warmth (week 1) giving way to cooler into week 2 with a north-south temperature battle appearing. That not only sets a severe weather pattern but big rains further north too.

It turns decidedly cool week 3-4.

QPF 7 and 10 day precipitation charts.

Note the deep moisture in Gulf of Mexico!

A still frozen solid Hudson Bay will certainly help keep NW breezes over eastern Canada and the US chilly into June.

A lot a rain expect during June and as a result, it’s largely at or below normal temperature wise.

What will certainly help with the wetter than normal conditions in the Southeast and East, seen by the CFSv2 would be an early season system coming up from the Caribbean and connecting with a trough diving south out of Canada.

Great Lakes ice tracker…

Just 2 days till June 1 and Lake Superior still has 2.5% ice.

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