Weather History for July 21

Explore significant weather events that occurred on this date throughout history, including hurricanes, tornadoes, blizzards, floods, and extreme temperature records.

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6 Historical Weather Events on July 21
1911 — The temperature at Painter, WY, dipped to 10 degrees to equal the record low for July for the continental U.S. (The Weather Channel)
1934 — The temperature reached 109 degrees at Cincinnati, OH, to cap their hottest summer of record. The state record for Ohio was established that day with a reading of 113 degrees near the town of Gallipolis. (David Ludlum)
1975 — Six inches of rain fell across Mercer County, NJ, in just ten hours causing the worst flooding in twenty years. Assunpink Creek crested eleven feet above flood stage at Hamilton and Trenton, the highest level of record. Traffic was brought to a standstill, and railway service between New York City and Washington D.C. was cut off for two days. Flooding left 1000 persons homeless, and caused an estimated 25 million dollars damage. (David Ludlum)
1987 — Thunderstorms produced severe weather from Utah to North Dakota, spawning a dozen tornadoes in North Dakota. Thunderstorms in North Dakota also produced baseball size hail at Clifford which caused four million dollars damage, and high winds which toppled a couple of eighty foot towers cutting off power to the town of Blanchard. (The National Weather Summary) (Storm Data)
1988 — While cool air invaded the central U.S., unseasonably hot weather continued over the western states. The temperature at Spring Valley, NV, soared from a morning low of 35 degrees to an afternoon high of 95 degrees. Fallon, NV, reported an all-time record high of 108 degrees, and Death Valley, CA, reported their sixth straight day of 120 degree heat. (The Weather Channel) (The National Weather Summary)
1989 — Afternoon thunderstorms over Florida produced wind gusts to 92 mph at Jacksonville, damaging thirteen light planes at Herlong Field. Five cities in Texas reported record low temperatures for the date. Corpus Christi, TX, equalled their record low for the date with a reading of 71 degrees, and then tied their record high for the date that afternoon with a reading of 97 degrees. (The National Weather Summary) (Storm Data)

About Weather History

Weather has always played a significant role in shaping human history. From devastating hurricanes and tornadoes to record-breaking temperatures and historic blizzards, extreme weather events have left lasting impacts on communities across the United States and around the world.

This collection documents notable weather events that occurred on July 21 throughout recorded history. These events include tropical storms and hurricanes, tornado outbreaks, severe thunderstorms, winter storms and blizzards, flooding events, heat waves and cold snaps, and other significant meteorological phenomena.

Types of Events Documented

  • Tropical Systems: Hurricanes, tropical storms, and their impacts
  • Severe Weather: Tornadoes, severe thunderstorms, and damaging winds
  • Winter Weather: Blizzards, ice storms, and record snowfall
  • Temperature Extremes: Heat waves, cold outbreaks, and record temperatures
  • Flooding: Flash floods, river flooding, and coastal flooding
  • Other Events: Droughts, wildfires influenced by weather, and unique phenomena

Understanding historical weather patterns helps us appreciate the power of nature and the importance of weather preparedness. Browse through different dates to discover what weather events shaped history on any given day of the year.