Subsided air in the anticyclone resulted in a very low dew-point
(and, as a consequence, very low RH) at our place in the
Limousin today ...55km WSW of Limoges.
Dew-point dropped to -12°C and RH to 20% as the
temperature reached 14.7°C in bright sunshine ... wish
I was there!
http://www.weather-uk.com/Current_Vantage_Pro_Plus.htm
Philip