The temperature remained over 20 degrees at six monitoring points in Vestfold and Rogaland Friday night.
The highest temperatur was recorded at Færder lighthouse at the farside of Oslo Fjord. The lowest temperature measured here was 21.8 degrees, The Norwegian Meteorological institute reports.
Tropical nights were also recorded at Svenner, Larvik.
In addition, the lowest temperature recorded was over 20 degrees at Eigerøya, Særheim Sola, and Stavanger in Rogaland.
© NTB Scanpix / #Norway Today