Now comes an era to remind the people the value of their beautiful lives. Good health is one of the most important factors for living a life well, physically as well as mentally. Our good health depends upon many factors which also includes healthy diet under which consumption of carbohydrates, fats, minerals, vitamins, etc., are require to be consumed in right amounts and at a right time. Likewise, plant health (vegetable production) is also dependent upon many internal as well as external (environmental), cultural and biotic factors such as climate, soil, irrigation, etc., at different phases of their life cycle. For raising a healthy and good quality crop, control of some of the environmental factors is essential, as vegetables (especially tomato) are cultivated throughout the year in one or other parts of India. Among climatic factors, temperature plays one of the most critical part in the growth and development of crop plants.