Non-Road Boards > Weather

Is it normal for US 101 to be 40 degrees cooler

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roadman65:
I noticed in Oregon in this past July was 40 degrees cooler on US 101 compared to the temps on I-5. So when it was 105 in Portland it was 65 in Astoria.

Is this all year round like this?  I heard in CA the one side of the Coastal Range is a different climate than the other year round. Was wondering the same for Oregon.

nexus73:
That is normal.  101 is serviced by the world's biggest air conditioner.  We call it the Pacific Ocean!  Typical summertime highs on 101 in Oregon are in the mid 60's.

Rick

Max Rockatansky:
Itís pretty much like that during the summer along the entire west coast.  Even here in Central California it will often be something like 60-65F in San Francisco and over 100F an hour or so east in Stockton.

jp the roadgeek:
Get a similar effect in the Spring in Boston when the wind is from the east.  It could be 85 in Worcester, 75 at 495, 65 by the time you get to 128, and 50 in the city.  Went to a Sox game in June. Left CT in shorts and needed a sweatshirt when I got there. 

Max Rockatansky:

--- Quote from: jp the roadgeek on November 13, 2021, 11:33:03 AM ---Get a similar effect in the Spring in Boston when the wind is from the east.  It could be 85 in Worcester, 75 at 495, 65 by the time you get to 128, and 50 in the city.  Went to a Sox game in June. Left CT in shorts and needed a sweatshirt when I got there.

--- End quote ---

In Florida the weather was actually more stable over the Gulf than it was inland.  The Florida Keys usually were somewhere between 75-90F all year whereas you could get potential freezing temperatures on mainland Florida in the winter. 

Interestingly on the West Coast the climate tends to equalize inland during the winter.  In the Central Valley of California this seems to be driven by all the cold air sinking in from the surrounding mountains which tends equalize the temperature with the coastal regions.

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