Jaipur, Jan. 11 -- Severe cold conditions and dense fog continued to disrupt normal life across Rajasthan on Saturday, forcing authorities to declare school holidays in 13 districts, while minimum temperatures plunged sharply in many parts of the state. According to the data shared by the meteorological department, the minimum temperature of 3.5 degrees Celsius was recorded in Dausa followed by 3.6 degrees Celsius in Alwar, 3.9 degrees Celsius in Sriganganagar, 4.2 degrees Celsius in Nagaur, 4.4 degrees Celsius in Fatehpur, and 4.5 degrees Celsius in Peelani, Jaisalmer, and Lunkaransar marking one of the coldest spell of the season. In view of the biting cold, at least 13 district administrations in Jaipur, Hanumangarh, Sikar, Bundi, Jalor, Jhalwar, Jhunjhunu, Kotputli-Behror, Dholpur, Sawai Madhopur, Bikaner, Ajmer, and Jaisalmer declared a holiday in the schools on Saturday. Meanwhile dense fog was also reported in Sikar, Nagaur, Jaisalmer, Jaipur, Kota, Ajmer, Udaipur, Kotputli-Behror on Saturday morning, with visibility in Sikar and Nagaur dropping to just 50 metres. In these cities, vehicles were also seen plying on highways with headlights on until around 9am. Flight operations were also affected, with at least six flights to and from Jaipur International Airport running late including one to Mumbai getting delayed over six hours. Cold conditions persisted even during daytime hours. While Sangria has 14.1 degrees Celsius, Sriganganagar and Peelani recorded 15 degrees Celsius, Bikaner, Mt Abu, Sirohi, Fatehpur, Karauli, Lunkaransar, and Jhunjhunu had around 17 degrees Celsius. However, the maximum temperature was recorded in Pratapgarh with 26.4 degrees Celsius. The Meteorological Department said that in many parts of the state, night temperatures remain 2 to 6 degree Celsius below normal. It warned that minimum temperatures may fall by another 1 to 2 degree Celsius over the next two to three days, especially in western, eastern, and northern Rajasthan....