Author Topic: Temperature very low when colder in morning  (Read 325 times)

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Offline KK7X

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Temperature very low when colder in morning
« on: September 14, 2018, 09:39:08 AM »
I have a 5 in 1 and right now I am showing 27 at 0630.  My other sensor is showing 31.5.  Local airport is showing 37
All other stations in the area are showing mid to upper 30's.

It seems to be correct later in the day.  A bad sensor? A bad 5 in 1?
What to do.

Offline A1cntrler

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Re: Temperature very low when colder in morning
« Reply #1 on: September 21, 2018, 11:16:38 PM »
Night temperatures can vary quite a bit especially if the wind is calm. The cold air settles lower and closer to the ground.  A difference between your two sensors (27 to 31) isn't that huge of a difference.  Are they both sited the same?  How far apart (vertically and horizontally) are they?  IS one in a spot that remains shady?  The colder one out in the open while the warmer one near trees/building/fence, etc..?

How far from the airport are you?  It doesn't seem too unrealistic for it to vary by that much.  I live in Southern California and in the morning on the news temperatures vary from 37 degrees (at Big Bear) to low 70's at the same time only 20 miles away.  Lots of micro climates here.
Acurite 5-in-1, Meteobridge and SmartHub (KCAMOORP12)

Acurite Atlas 8 (KCAMOORP29)