United States temperature extremes
The largest recorded temperature change in one place over a 24-hour period occurred on January 15, 1972 in Loma, Montana, when the temperature rose from −54 to 49 °F (−47.8 to 9.4 °C).
The most dramatic temperature changes occur in North American climates susceptible to Chinook winds. For example, the largest 2-minute temperature change of 49 °F (27.2 °C) occurred in Spearfish, South Dakota, a rise from −4 to 45 °F (−20.0 to 7.2 °C).
Lack of extremes
Among the U.S. states, Hawaii has both the lowest state maximum of 100 °F (37.8 °C) and the highest state minimum of 12.0 °F (−11.1 °C). Indeed, tropical ocean island locations such as Hawaii often have the lowest recorded temperature ranges, sometimes with a difference of as little as 62 °F (34.4 °C).
- Temperature extremes site at Perth Weather Centre
- Each state's high temperature record USA Today, last updated August 2006.
- Each state's low temperature record USA Today, last updated August 2006.
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