Yes there is a discrepancy between forecast and local weather station. All the models show almost the same discrepancy. On the screenshot you can notice that all weather stations at some distance from Cokeville show much higher temperatures and 5 days before models predictions were more in line with reported temperature.
So I guess this discrepancy could be due to local conditions such as stratus bringing temperature inversion.
If you want the reported pressure from a certified meteo. station (e.g. airport)
go to airports and see the pressure (reduced to mean sea level)
indicated with 4 numbers after the Q code.
e.g. 1017 hectoPascal (milibars) in London/Gatwick,
P.S. it is a very useful way to calibrate your barometer.
The issue has been solved by the CumulusMX users forum team.
For the record and assistance of other Windy.com users, I understand it is because Windy uses Let's Encrypt for their SSL certificates, recently (30th Sept 2021) the Let's Encrypt R3 intermediate CA certificate they use to authenticate their client certificates expired.The rPi has not kept up with that change and still has the old intermediate CA cert. (I am no expert!). The steps I followed were as follows:
Updating the mozilla/DST_Root_CA_X3.crt certificate:-
Open a terminal session on the RPi
Type sudo nano /etc/ca-certificates.conf into the terminal session, look through the response and
Then type the exclamation character ! in front of the line: /mozilla/DST_Root_CA_X3.crt
Save the file: Ctrl-X, then hit y for yes
Then update the certificates by typing sudo update-ca-certificates into the terminal session
Reboot your RPi, the Windy.com upload will restart and you should see your data within an hour or so.
The posts from the CumulusMX forum are here and here.
For any others that have this problem, depending on when CWOP registers your station it might take a little over a week for your MADIS to start posting (MADIS starts to post new stations on Wednesdays) - it should usually take less, I just got "lucky" with the timing.
You can compare the data of your station versus all available models. To do that, select your station at your place, click on it :
In the left corner, you can select the model and compare the data from the model versus data from your station
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