The climate of this district is characterised by its dryness and extremes temperatures and scanty rainfall. The year may be divided into four seasons. The cold season from November to March is followed by the Summer season which lasts up to the end of June. The period from July to about the middle of September and from the middle of September to October constitute the south west monsoon and post-monsoon seasons respectively.
Records of rainfall in the district are available for Sirsa only for sufficiently long periods. The average annual rainfall in the district is 32–53 mm. The rainfall in the district increases generally from west to east. About 72 percent of the annual normal rainfall in the district is received during the short south east monsoon period, July to September, July and August being the rainiest months. There is significant amount of rainfall in the month of June, mostly in the form of thunder showers. In the rest of the year, there is a very little rainfall. During the period 1901 to 1975, the highest annual rainfall as recorded was 327 percent of the normal in 1917. The lowest annual rainfall amounting to only 34 percent of the normal was recorded in 1920.
On an average there are 20 rainy days (i.e. days with rainfall of 2.5 mm or more) in a year in the district. The heaviest rainfall in 24 hours recorded in the district was 165.4 mm on September 22, 1917
