The maximum air temperature in Alterau for this day for the last 72 years of observations is +13.5°C, recorded in 1979.
An absolute minimum of -8.2°C was recorded in 1978. The average temperature for this day is +8.6°C.
The heaviest rainfall (20.8 mm) in Alterau was recorded in 1967. The maximum wind gusts were up to 20.24 m/s in 2011.