Weather History for July 20
The temperature at Washington D.C. soared to an all-time record of 106 degrees. The next day Millsboro reached 110 degrees to set a record for the state of Delaware. July 1930 was one of the hottest and driest summers in the U.S., particularly in the Missouri Valley where severe drought conditions developed. Toward the end of the month state records were set for Kentucky with 114 degrees, and Mississippi with 115 degrees. (David Ludlum)

The temperature at Keokuk, IA, soared to 118 degrees to establish a state record. (The Weather Channel)

Twenty-two inches of hail reportedly fell northeast of Dickinson, ND. (The Weather Channel)

The temperature at Charleston, SC, hit 104 degrees for the second day in a row to tie their all-time record high. (The Weather Channel)

Thunderstorms produced severe weather across Minnesota, Wisconsin and Michigan. Thunderstorms produced wind gusts to 87 mph at Mosinee, WI, and strong thunderstorm winds capsized twenty-six boats on Grand Traverse Bay drowning two women. Thunderstorms produced nine inches of rain at Shakopee, MN, with 7.83 inches reported in six hours at Chaska, MN. Thunderstorms in north central Nebraska produced hail as large as golf balls in southwestern Cherry County, which accumulated to a depth of 12 inches. (The National Weather Summary) (Storm Data)

The temperature at Redding, CA, soared to an all-time record high of 118 degrees. Showers and thunderstorms produced much needed rains from New England to southern Texas. Salem, IN, was deluged with 7.2 inches of rain resulting in flash flooding. (The National Weather Summary)

Showers and thunderstorms in the Middle Atlantic Coast Region soaked Wilmington, DE, with 2.28 inches of rain, pushing their total for the period May through July past the previous record of 22.43 inches. Heavy rain over that three month period virtually wiped out a 16.82 inch deficit which had been building since drought conditions began in 1985. Thunderstorms in central Indiana deluged Lebanon with 6.50 inches of rain in twelve hours, and thunderstorms over Florida produced wind gusts to 84 mph at Flagler Beach. (The National Weather Summary) (Storm Data)

Data courtesy of