The National Weather Service of Mexico (Servicio Meteorologico Nacional) reported that the warmest temperature ever recorded in the city is , while the coldest is on February 4, 2011. July 1973 is the record wettest month, with . For a single day the record rainfall is on August 24, 1966. Chihuahua averages 3,081 hours of sunshine per year, ranging from a low of 217 hours in December (about 7 hours of sunshine per day) to a high of 305 hours in May (about 9.8 hours of sunshine per day).