I would make sure it is completely in the shade at all times.  I see the 
meteostick manual even says to ignore indoor temperature and humidity as 
humidity will always be 30% and temperature will be reading high due to 
temperature rise from the electronics!!  Goodness knows what warmth from 
the sun does to readings!!!!!!  Deffo keep it in the shade for any chance 
of sensible readings from onboard sensors I would think!!!!




On Friday, 9 August 2019 08:49:46 UTC+3, Manfred Maier wrote:
>
> Good idea! It actually could be sunlight. The time (late afternoon) would 
> fit. And yes, August 3 was a day without much sun. So was Aug 7, where the 
> effect was also less pronounced.
>
> Today will be a sunny day, so I'll move the Meteostick a bit into the 
> shadow and see what happens.
>
>
> Am Freitag, 9. August 2019 07:40:22 UTC+2 schrieb Michi Kaa:
>>
>>
>>
>> Am Freitag, 9. August 2019 07:35:46 UTC+2 schrieb Michi Kaa:
>>>
>>> Where is the Barometer located? Indoor? Since temperature and humidity 
>>> influence measurement of pressure, it is possible that the measurement is 
>>> just wrong just because you are opening a window for ventilating the house 
>>> or when the barometer sensor is hit by direct sunlight during the day and 
>>> is warmed up.
>>>
>>
>> The fact this happens repeatedly more or less the same time during the 
>> day lets me think its sunlight. How was weather on Aug 3 in Belchertown? 
>> Overcast?
>>
>

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