NOAA - Climate.gov

NOAA Climate.gov provides science and information for a climate-smart nation.  Americans’ health, security, and economic well-being are closely linked to climate and weather.  People want and need information to help them make decisions on how to manage climate-related risks and opportunities they face.

NOAA Climate.gov is a source of timely and authoritative scientific data and information about climate.  Our goals are to promote public understanding of climate science and climate-related events, to make our data products and services easy to access and use, to provide climate-related support to the private sector and the Nation’s economy, and to serve people making climate-related decisions with tools and resources that help them answer specific questions.

http://www.climate.gov/