The maximum air temperature in Sliven for this day for the last 73 years of observations is +11.6°C, recorded in 2007.
An absolute minimum of -10.9°C was recorded in 1963. The average temperature for this day is +4.2°C.
The heaviest rainfall (24.3 mm) in Sliven was recorded in 2016. The maximum wind gusts were up to 15.79 m/s in 1970.