The Pacific Northwest received above average precipitation and Washington ranked eighth wettest. A ridge of high pressure suppressed precipitation across the Southwest in May and resulted in Arizona ranking fifth driest for the month.was 3.17 inches, 0.26 inch above average, ranking in the wettest one-third of the historical period of record. The May precipitation total for the contiguous U.S.temperature-related energy demand during May was 5 percent above average and the 55th-highest value in the 128-year period of record. Based on NOAA's Residential Energy Demand Temperature Index (REDTI), the contiguous U.S.Based on data records as of June 6, there were 6,543 record warm daily high (3,022) and low (3,521) temperature records during May, which is just more than 1.5 times the 4,237 record cold daily high (2,396) and low (1,841) temperature records.Temperatures were near average across much of the rest of the state. Temperatures were above average across much of southern mainland Alaska as well as the northern Panhandle and parts of the North Slope. The Alaska average May temperature was 39.9вЏ, 2.1вЏ above the long-term mean, ranking in the warmest third of the record for the state.Nighttime temperatures were below average across the Northwest, portions of the Great Basin and northern Rockies. Massachusetts and Rhode Island ranked second warmest for nighttime temperatures during May while an additional 9 states across the South, Southeast, Great Lakes and Northeast had one of their warmest 10 Mays on record. Above-average minimum temperatures were observed across portions of the Southwest, Deep South and the eastern half of the contiguous U.S. average minimum (nighttime) temperature during May was 49.4вЏ, 2.0вЏ above the 20th century average, ranking in the warmest one-third of the record. Washington ranked second coldest on record for daytime temperatures in May. Below-average daytime temperatures occurred across the Northwest and portions of the northern Plains. Texas tied with 1998 for warmest daytime temperatures on record during May. Above-average maximum temperatures were observed across the Southwest and Deep South as well as parts of the Southeast, Great Lakes and Northeast. average maximum (daytime) temperature during May was 74.4вЏ, 1.4вЏ above the 20th century average, ranking in the warmest one-third of the record. Portions of south Texas reached 105вЏ on May 17 with temperatures from Nebraska to Texas ranging as much as 25вЏ above average.Abilene had 14 100вЏ days in May, shattering the previous record of 7 days set in 19.Amarillo set a record on May 7 for the earliest 100вЏ day in the calendar year (prior record was May 15).Triple-digit heat scorched portions of the South throughout the month, setting a number of temperature records across Texas. Temperatures across the Northwest and northern Rockies were below average, with much of the Southwest, Deep South and locations east of the Mississippi River above average.For May, a persistent trough of low pressure over the Pacific Northwest contributed to Washington state ranking eighth coldest on record while the downstream ridge brought unseasonable warmth to the Deep South, resulting in Texas ranking second warmest.temperature during May was 61.9вЏ, 1.7вЏ above the 20th century average, ranking in the warmest third of the 128-year period of record.

Precipitation totals year to date