Select your cities:

Barcelona (Current: 10.19°)
Hertford (Current: n/a°)
London (Current: 5.96°)
Manresa (Current: 5.30°)
Market Drayton (Current: 2.25°)
Segur de Calafell (Current: 10.60°)
Segur de Calafell-sea (Current: 16.00°)
Tallinn (Current: 4.19°)

• For Market Drayton it's fetching data from a RaspberryPI connected sensor, also available in CSV.
• For Segur de Calafell sea it is extracted from Meteocat
• For Manresa: from Aemet
• For Segur de Calafell (Cunit): from Meteocat
• For Barcelona, Tallinn and Barcelona using OpenWeatherMap
• Graphics are plotted using gnuplot

From 2006 to 2022 the majority of data was fetched parsing noaa.gov (e.g. http://tgftp.nws.noaa.gov/weather/current/LEBL.html. In July 2022 the website stopped working (was timing out) and I moved everything to openweather.