paragraph_text: With 19.48 inches of rainfall, May 2015 was by far Oklahoma City's record-wettest month since record keeping began in 1890. Across Oklahoma and Texas generally, there was record flooding in the latter part of the month

paragraph_text: Rainfall along the coast averages about 10 inches (250 mm) of precipitation annually. The average (mean) rainfall is 10.65 inches (271 mm) and the median is 9.6 inches (240 mm). Most of the rainfall occurs during the cooler months. The months of December through March supply most of the rain, with February the only month averaging 2 inches (51 mm) or more of rain. The months of May through September tend to be almost completely dry. Though there are few wet days per month during the rainy period, rainfall can be heavy when it does fall. Rainfall is usually greater in the higher elevations of San Diego; some of the higher elevation areas of San Diego can receive 11–15 inches (280–380 mm) of rain a year. Variability of rainfall can be extreme: in the wettest years of 1883/1884 and 1940/1941 more than 24 inches (610 mm) fell in the city, whilst in the driest years as little as 3.2 inches (80 mm) has fallen for a full year. The wettest month on record has been December 1921 with 9.21 inches (234 mm).

paragraph_text: Forests cover 24 percent of Oklahoma and prairie grasslands composed of shortgrass, mixed-grass, and tallgrass prairie, harbor expansive ecosystems in the state's central and western portions, although cropland has largely replaced native grasses. Where rainfall is sparse in the western regions of the state, shortgrass prairie and shrublands are the most prominent ecosystems, though pinyon pines, red cedar (junipers), and ponderosa pines grow near rivers and creek beds in the far western reaches of the panhandle. Southwestern Oklahoma contains many rare, disjunct species including sugar maple, bigtooth maple, nolina and southern live oak.

paragraph_text: Oklahoma City is the capital and largest city of the state of Oklahoma. The county seat of Oklahoma County, the city ranks 27th among United States cities in population. The population grew following the 2010 Census, with the population estimated to have increased to 620,602 as of July 2014. As of 2014, the Oklahoma City metropolitan area had a population of 1,322,429, and the Oklahoma City-Shawnee Combined Statistical Area had a population of 1,459,758 (Chamber of Commerce) residents, making it Oklahoma's largest metropolitan area. Oklahoma City's city limits extend into Canadian, Cleveland, and Pottawatomie counties, though much of those areas outside of the core Oklahoma County area are suburban or rural (watershed). The city ranks as the eighth-largest city in the United States by land area (including consolidated city-counties; it is the largest city in the United States by land area whose government is not consolidated with that of a county or borough).

paragraph_text: Other capital crimes include: the use of a weapon of mass destruction resulting in death, espionage, terrorism, certain violations of the Geneva Conventions that result in the death of one or more persons, and treason at the federal level; aggravated rape in Louisiana, Florida, and Oklahoma; extortionate kidnapping in Oklahoma; aggravated kidnapping in Georgia, Idaho, Kentucky and South Carolina; aircraft hijacking in Alabama and Mississippi; assault by an escaping capital felon in Colorado; armed robbery in Georgia; drug trafficking resulting in a person's death in Florida; train wrecking which leads to a person's death, and perjury which leads to a person's death in California, Colorado, Idaho and Nebraska.

paragraph_text: Mannford is a city in Creek County in the northeastern part of the U.S. state of Oklahoma. In 2010, the population was 3,076, up from 2,095 at the 2000 census. The city sits next to Keystone Lake and claims to be the "Striped Bass Capital of the World".

paragraph_text: Prominent theatre companies in Oklahoma include, in the capital city, Oklahoma City Theatre Company, Carpenter Square Theatre, Oklahoma Shakespeare in the Park, and CityRep. CityRep is a professional company affording equity points to those performers and technical theatre professionals. In Tulsa, Oklahoma's oldest resident professional company is American Theatre Company, and Theatre Tulsa is the oldest community theatre company west of the Mississippi. Other companies in Tulsa include Heller Theatre and Tulsa Spotlight Theater. The cities of Norman, Lawton, and Stillwater, among others, also host well-reviewed community theatre companies.

paragraph_text: The Oklahoma Pardon and Parole Board is the parole board of the state of Oklahoma. The Board was created by an amendment to the Oklahoma Constitution in 1944. The Board has the authority to empower the Governor of Oklahoma to grant pardons, paroles, and commutations to people convicted of offenses against the state of Oklahoma.

paragraph_text: Bethany is a city in Oklahoma County, Oklahoma, United States, and a part of the Oklahoma City metropolitan area. The community was founded in 1909 by followers of the Church of the Nazarene from Oklahoma City.

paragraph_text: During the 1930s, parts of the state began suffering the consequences of poor farming practices, extended drought and high winds. Known as the Dust Bowl, areas of Kansas, Texas, New Mexico and northwestern Oklahoma were hampered by long periods of little rainfall and abnormally high temperatures, sending thousands of farmers into poverty and forcing them to relocate to more fertile areas of the western United States. Over a twenty-year period ending in 1950, the state saw its only historical decline in population, dropping 6.9 percent as impoverished families migrated out of the state after the Dust Bowl.

paragraph_text: Oklahoma i/ˌoʊkləˈhoʊmə/ (Cherokee: Asgaya gigageyi / ᎠᏍᎦᏯ ᎩᎦᎨᏱ; or translated ᎣᎦᎳᎰᎹ (òɡàlàhoma), Pawnee: Uukuhuúwa, Cayuga: Gahnawiyoˀgeh) is a state located in the South Central United States. Oklahoma is the 20th most extensive and the 28th most populous of the 50 United States. The state's name is derived from the Choctaw words okla and humma, meaning "red people". It is also known informally by its nickname, The Sooner State, in reference to the non-Native settlers who staked their claims on the choicest pieces of land before the official opening date, and the Indian Appropriations Act of 1889, which opened the door for white settlement in America's Indian Territory. The name was settled upon statehood, Oklahoma Territory and Indian Territory were merged and Indian was dropped from the name. On November 16, 1907, Oklahoma became the 46th state to enter the union. Its residents are known as Oklahomans, or informally "Okies", and its capital and largest city is Oklahoma City.

paragraph_text: Oklahoma's first capital was Guthrie, Oklahoma, but it moved to Oklahoma City in 1910. Construction began on the Oklahoma State Capitol in 1914 and was completed in 1917. Originally, it housed the judicial branch of Oklahoma, but the state's high courts moved most of their operations to the Oklahoma Judicial Center in 2011, leaving only the Supreme Court Hearing Chamber in the capitol building.

paragraph_text: Population has outstripped the supply of freshwater, usually from rainfall. The northern atolls get 50 inches (1,300 mm) of rainfall annually; the southern atolls about twice that. The threat of drought is commonplace throughout the island chains.

paragraph_text: Early in the morning on August 14, 2017, after three days of torrential rainfall, devastating floods and mudslides occurred in and around Sierra Leone's capital city, Freetown.

paragraph_text: Cúa (founded in 1690) is a small city capital of the Urdaneta Municipality, located in the Miranda State (Estado Miranda) in the north of Venezuela with an altitude of 490 m. Cúa is noted for warm and clear weather, with year-round sunshine and 60 days of rainfall annually, and an average temperature that range from 18 °C to 28 °C, but with relative low humidity.

paragraph_text: Skullyville (also spelled Scullyville) is a small unincorporated rural community in Le Flore County, Oklahoma, United States. It is about one mile east of Spiro, Oklahoma and west of Fort Smith, Arkansas. Now essentially nothing but a cemetery remains, but it was an important community before the Civil War. Skullyville was the site of the Choctaw Agency from 1832 until 1839. It then became the capital of the Mushulatubbe District of the Choctaw Nation, a stop for the Butterfield Stage and capital of the Choctaw Nation. The town suffered serious damage during the Civil War, then was bypassed by the railroad and abandoned by businessmen who moved to the nearest railroad station. Closure of the post office in 1917 was essentially the death knell of the town. It is now considered a ghost town.

paragraph_text: Other professional sports clubs in Oklahoma City include the Oklahoma City Dodgers, the Triple-A affiliate of the Los Angeles Dodgers, the Oklahoma City Energy FC of the United Soccer League, and the Crusaders of Oklahoma Rugby Football Club USA Rugby.

paragraph_text: Rush Springs is a town in Grady County, Oklahoma, United States. The population was 1,231 at the 2010 census. The town promotes itself as the "Watermelon Capital of the World."

paragraph_text: The humid subtropical climate (Koppen Cfa) of central, southern and eastern Oklahoma is influenced heavily by southerly winds bringing moisture from the Gulf of Mexico. Traveling westward, the climate transitions progressively toward a semi-arid zone (Koppen BSk) in the high plains of the Panhandle and other western areas from about Lawton westward, less frequently touched by southern moisture. Precipitation and temperatures decline from east to west accordingly, with areas in the southeast averaging an annual temperature of 62 °F (17 °C) and an annual rainfall of generally over 40 inches (1,020 mm) and up to 56 inches (1,420 mm), while areas of the (higher-elevation) panhandle average 58 °F (14 °C), with an annual rainfall under 17 inches (430 mm).

paragraph_text: By the time Oklahoma was admitted to the Union in 1907, Oklahoma City had surpassed Guthrie, the territorial capital, as the population center and commercial hub of the new state. Soon after, the capital was moved from Guthrie to Oklahoma City. Oklahoma City was a major stop on Route 66 during the early part of the 20th century; it was prominently mentioned in Bobby Troup's 1946 jazz classic, "(Get Your Kicks on) Route 66", later made famous by artist Nat King Cole.

Question: When did record rainfall occur in the capital of Oklahoma?
Answer: May 2015