‘Dry’ is the placeholder icon for ‘not raining’ when WD is not set to use METAR and/or Solar for conditions.
You’ll need to setup the Summary Image
http://www.weather-watch.com/wiki/index.php/Summary_image/weather_icons_setup
and the Metar to use
http://www.weather-watch.com/wiki/index.php/Getting_Weather_Reports_and_Metar_Data
And if you have a Solar Sensor, do the setup for it also
http://www.weather-watch.com/wiki/index.php/Forecasts_and_Icons
More info
http://discourse.weather-watch.com/p/233510
Hope this helps…
Best regards,
Ken