Earth is a habitable planet .This is due to Earth revolve round the Sun at a distance 1 astronomical unit. Solar radiation makes the Earth a habitable planet. Any changes in the solar output are likely affecting our Earth climate. Many researchers believe the steady rise in sunspots and faculae since the late seventeenth century may be responsible for as much as half of the 0.6 degree of global warming over the last 110 years (IPCC2001).There is increasing evidence that changing solar activity on a wide range of time scales influences the Earth climate. The response of the Indian regional average temperature to the variation of solar flux during 52 years has been investigated. This involves the correlation, regression and T test studies between the solar flux and the average temperature for the six different regions of India during the period 1950-2002. This paper provides a brief introduction about solar flux F10.7 cm and verifies the connection between solar flux and the Earth climate. Keywords: Average temperature, Solar flux, Solar Maximum and Soar Minimum.