This dataset shows weather data from DDOT Roadway Weather Information Systems (RWIS) road sensors within the district. RWIS are technology tolls that monitor weather and roadway condition information to assist with transportation system management. Many states utilize RWIS for assisting with roadway maintenance decisions, particularly in cold weather climates, and providing weather information to travelers. Currently DDOT has sites in various locations throughout the District with more to be added in the near future. RWIS stations assist DDOT by measuring the air temperature, wind speed, visibility, precipitation, frost depth and other climatic data.