Picture used for representational purpose only RANCHI: With a sudden rise in maximum and minimum temperatures across Jharkhand in the last few days, several persons have been visiting doctors and physicians with complaints of seasonal diseases. On Monday, Jamshedpur remained warm with a minimum temperature of 18° Celsius and a maximum of 31° C while the mercury at Ranchi was at 16.3° C at night and 27.5° C during daytime. On Sunday, Ranchi had recorded 17.6° C minimum temperature, the highest for the month in 50 years. While weathermen attribute this sudden change to a western disturbance and its impact, many are clueless about the exact reason for the unusual weather pattern.