...1680... The first tornado recorded in America occurred at Cambridge, Massachusetts, killing one person.
...1816... Frost was reported in low places throughout New England.
...1935... Over 10 inches of rain fell in 48 hours in the Cortland, New York area. Damaging floods resulted in the Susquehanna and Hudson River Valleys.
...1950... The town of York NE was deluged with 13.15 inches of rain in 24 hours to establish a state record.
...1975... Three people were killed and six others were injured when lightning struck a walnut tree near Mayo FL. The nine people were stringing tobacco under a tin shed when the bolt hit the nearby tree.
...1987... Thunderstorms in the central U.S. produced wind gusts to 90 mph at Waterloo IA, 6.38 inches of rain at Tescott KS, and twenty-five minutes OF ping-pong ball size hail at Drummond OK.
...1988... Thirty cities in the north central and northeastern U.S. reported record high temperatures for the date. Beckley WV equaled their all-time record with a high of 93 degrees. Afternoon and evening thunderstorms spawned seven tornadoes in Adams and Logan counties of eastern Colorado, and hail caused 2.3 million dollars damage in Adams, Logan and Washington counties.
...1989... Sixteen cities in the central and western U.S. reported record high temperatures for the date. The high of 103 degrees at Denver CO equaled their record for July, and a 110 degree reading at Rapid City SD equaled their all-time record high. Denver reported a record five straight days of 100 degree heat, and Scottsbluff NE reported a record eight days in a row of 100 degree weather.
...1992... A severe thunderstorm produced an unusually long downburst over Concordia, Kansas, resulting in severe damage. Peak one-minute sustained winds reached 108 mph at the Concordia airport and sustained winds exceeded 60 mph for over 20 minutes. 6 people were injured and damage was estimated at over $25 million.