Chandigarh, June 30 -- While the day temperature has remained above normal for the past week, the night temperature has now also crossed 30degC for the first time this season, according to the India Meteorological Department (IMD).

The minimum temperature rose from 28.6degC on Sunday to 30.3degC on Monday, 3.7degC above normal. Last year's highest minimum temperature in the same month was 32.7degC, recorded on June 13.

IMD officials said the rise in heat was due to the cloudy weather in the region and high humidity. After a high maximum temperature on Sunday, cloudy weather prevented the city from cooling down at night even as rain was reported in some parts of Himachal Pradesh.

The humidity from the rain in the region has also increas...