the hottest temperature in the U.S., 134 °F, was observed at Greenland Ranch, Death Valley, California, on July 10, 1913

What are the highest temperatures recorded in the U.S.?

All-Time Record Maximum Temperature by State

(Indicated records marked by * are based upon WunderGround.com articles here and here.)
State Location Record High Date
Alabama Centerville112 °FSeptember 6, 1925
Arizona Lake Havasu City128 °FJune 29, 1994
Arkansas Ozark120 °FAugust 10, 1936
California Greenland Ranch134 °FJuly 10, 1913
Colorado Sedgwick
Las Animas
114 °FJuly 11, 1954
July 1, 1933
Connecticut Torrington
Danbury
106 °FAugust 23, 1916
July 15, 1995
Delaware Millsboro110 °FJuly 21, 1930
Florida Monticello109 °FJune 29, 1931
Georgia Louisville
Greenville 2 NNW
112 °FJuly 24, 1952
August 20, 1983
*Hawaii Waianae, Oahu
Mahukona, Big Island
Kaanapali, Maui
Puunene, Maui
Puunene, Maui
Sea Mountain, Big Island
*98 °FJuly 1915
prior to 1941
prior to 1941
Aug. 19, 1951
July 14, 1957
Sept. 1990
Idaho Orofino118 °FJuly 28, 1934
Illinois East St. Louis117 °FJuly 14, 1954
Indiana Collegeville
(South side of Renssalaer)
116 °FJuly 14, 1936
Iowa Keokuk No. 2118 °FJuly 20, 1934
Kansas Fredonia
Alton
121 °FJuly 18, 1936
July 24, 1936
Kentucky Greensburg114 °FJuly 28, 1930
Louisiana Plain Dealing 4W114 °FAugust 10, 1936
Maine North Bridgton105 °FJuly 4 & 10, 1911
Maryland Boettcherville
Keedysville
Cumberland
Cumberland
Frederick
109 °FJuly 3, 1898
August 6, 1918
August 6 & 7, 1918
July 10, 1936
July 10, 1936
Massachusetts New Bedford
Chester
107 °FAugust 2, 1975
Michigan Mio
Stanwood
112 °FJuly 13, 1936
Minnesota Beardsley115 °FJuly 29, 1917
Mississippi Holly Springs 2N115 °FJuly 29, 1930
Missouri Union
Warsaw
118 °FJuly 14, 1954
Montana Glendive
Medicine Lake
117 °FJuly 20, 1893
July 5, 1937
Nebraska Geneva
Hartington
Minden
118 °FJuly 15, 1934
July 17, 1936
July 24, 1936
Nevada Laughlin125 °FJune 29, 1994
New Hampshire Nashua106 °FJuly 4, 1911
New Jersey Runyon110 °FJuly 10, 1936
New Mexico Waste Isolation Pilot Plant (nr. Loving)122 °FJune 27, 1994
New York Troy108 °FJuly 22, 1926
North Carolina Fayetteville110 °FAugust 21, 1983
North Dakota Steele121 °FJuly 6, 1936
Ohio Gallipolis (near)113 °FJuly 21, 1934
Oklahoma Alva
Altus
Poteau
Altus
Tipton
120 °FJuly 18, 1936
July 19, 1936
August 10, 1936
August 12, 1936
June 27, 1994
*Oregon Umatilla*117 °FJuly 27, 1939
Pennsylvania Phoenixville111 °FJuly 9 & 10, 1936
Rhode Island Providence104 °FAugust 2, 1975
South Carolina Blackville
Calhoun Falls
Camden
111 °FSeptember 4, 1925
September 8, 1925
June 28, 1954
South Dakota Gann Valley
Fort Pierre
120 °FJuly 5, 1936
July 15, 2006
Tennessee Perryville113 °FJuly 29, 1930
August 9, 1930
Texas Seymour
Monahans
120 °FAugust 12, 1936
June 28, 1994
Utah St. George117 °FJuly 5, 1985
*Vermont Vernon*105 °FJuly 4, 1911
Virginia Columbia
Balcony Falls
110 °FJuly 5 & 7, 1900
July 15, 1954
Washington Wahluke
Ice Harbor Dam
118 °FJuly 24, 1928
August 5, 1961
West Virginia Moorefield
Martinsburg
112 °FAugust 4, 1930
July 10, 1936
Wisconsin Wisconsin Dells114 °FJuly 13, 1936
Wyoming Basin
Diversion Dam
115 °FAugust 8, 1983
July 15, 1988
Alaska Fort Yukon100 °FJune 27, 1915
Puerto Rico Mona Island104 °FJuly 2, 1996
Virgin Islands Cruz Bay (SJ)
Charlotte Amalie (ST)
Charlotte Amalie (ST)
99 °FJuly 31, 1988
August 4, 1994
June 23, 1996
(page last updated 9/14/2011)
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