Climate change is the greatest challenge the world is facing today. Indian agriculture is highly vulnerable to adverse effects of climate change and related extreme weather conditions, as 65 per cent of cultivable land is under rainfed agriculture, which solely depends on monsoon rains. The increased uncertainly in rainfall and frequent occurrence of drought further threaten the livelihoods of farmers practicing rainfed agriculture. This paper mainly deals with the analysis of rainfall during monsoon season and its variability that governs the cropping system in the Raichur region. Daily rainfall data of twenty five years (1986-2010) have been analyzed for establishing the long term averages of monthly, seasonal and annual rainfall and its variability. The mean annual rainfall is 723.5 mm with 23 per cent variability; with standard deviation of 172.1 mm. September is the wettest month (average rains- 150.4 mm) with coefficient of variation of 45 per cent and it is the highest annual rainfall contributing month (20.8%). Rainfall of June to October months shows lower coefficient of variation. The study also revealed that the monsoon contributes 69.0 per cent of annual rainfall with a mean rainfall of 498.9 mm followed by post monsoon (21.0 % and 152.1 mm) season. The coefficient of variation for rainfall was highest during winter season when compared to other seasons. There is an ample scope for rain water harvesting from June to October which can be utilized as crop saving irrigation as well as pre sowing irrigation for succeeding Rabi crops which are generally sown on residual soil moisture