The following table lists the highest and lowest temperatures recorded in each state in the United States, in both Fahrenheit and Celsius.
| State | Record high Temperature |
Date | Place(s) | Record low Temperature |
Date | Place(s) |
|---|---|---|---|---|---|---|
| Alabama | 114°F / 46°C | September 5, 1925 | Centerville | -27°F / -33°C | January 30, 1966 | New Market |
| Alaska | 100°F / 38°C | June 27, 1915 | Fort Yukon | -80°F / -62°C | January 23, 1971 | Prospect Creek |
| Arizona | 128°F / 53°C | July 5, 2007* | Lake Havasu City | -40°F / -40°C | January 7, 1971 | Hawley Lake |
| Arkansas | 120°F / 49°C | August 10, 1936 | Ozark | -29°F / -34°C | February 13, 1905 | Pond |
| California | 134°F / 57°C | July 10, 1913 | Death Valley | -45°F / -43°C | January 20, 1937 | Boca |
| Colorado | 118°F / 48°C | July 11, 1888 | Bennett | -61°F / -52°C | February 1, 1985 | Maybell |
| Connecticut | 106°F / 41°C | July 15, 1995 | Danbury | -32°F / -36°C | February 16, 1943* | Falls Village |
| Delaware | 110°F / 43°C | July 21, 1930 | Millsboro | -17°F / -27°C | January 17, 1893 | Millsboro |
| District of Columbia | 106°F / 41°C | July 20, 1930 | Washington, DC | -15°F / -26°C | February 11, 1899 | Washington, DC |
| Florida | 109°F / 43°C | June 29, 1931 | Monticello | -02°F / -19°C | February 13, 1899 | Tallahassee |
| Georgia | 112°F / 44°C | July 24, 1952 | Greenville | -17°F / -27°C | January 27, 1940 | Northern Floyd County |
| Hawaii | 100°F / 38°C | April 27, 1931 | Pahala | +12°F / -11°C | May 17, 1979 | Mauna Kea |
| Idaho | 118°F / 48°C | July 28, 1934 | Orofino | -60°F / -51°C | January 18, 1943 | Island Park Dam |
| Illinois | 117°F / 47°C | July 14, 1954 | East St. Louis | -36°F / -38°C | January 5, 1999 | Congerville |
| Indiana | 116°F / 47°C | July 14, 1936 | Collegeville | -36°F / -38°C | January 19, 1994 | New Whiteland |
| Iowa | 118°F / 48°C | July 20, 1934 | Keokuk | -47°F / -44°C | February 3, 1996* | Elkader |
| Kansas | 121°F / 49°C | July 24, 1936* | Alton | -40°F / -40°C | February 13, 1905 | Lebanon |
| Kentucky | 114°F / 46°C | July 28, 1930 | Greensburg | -34°F / -37°C | January 28, 1963 | Cynthiana |
| Louisiana | 114°F / 46°C | August 10, 1936 | Plain Dealing | -16°F / -27°C | February 13, 1899 | Minden |
| Maine | 105°F / 41°C | July 10, 1911* | North Bridgton | -50°F / -46°C | January 16, 2009 | Big Black River |
| Maryland | 109°F / 43°C | July 10, 1936* | Cumberland, Frederick | -40°F / -40°C | January 13, 1912 | Oakland |
| Massachusetts | 107°F / 42°C | August 2, 1975 | New Bedford, Chester | -35°F / -37°C | January 12, 1981 | Chester |
| Michigan | 112°F / 44°C | July 13, 1936 | Mio | -51°F / -46°C | February 9, 1934 | Vanderbilt |
| Minnesota | 114°F / 46°C | July 6, 1936* | Moorhead | -64°F / -53.3°C | February 1996 | Embarrass |
| Mississippi | 115°F / 46°C | July 29, 1930* | Holly Springs | -19°F / -28°C | January 30, 1966 | Corinth |
| Missouri | 118°F / 48°C | July 14, 1954* | Warsaw, Union | -40°F / -40°C | February 13, 1905 | Warsaw |
| Montana | 117°F / 47°C | July 5, 1937 | Medicine Lake | -70°F / -57°C | January 20, 1954 | Rogers Pass |
| Nebraska | 118°F / 48°C | July 24, 1936* | Minden | -47°F / -44°C | February 12, 1899* | Camp Clarke |
| Nevada | 125°F / 52°C | June 29, 1994* | Laughlin | -50°F / -46°C | January 8, 1937 | San Jacinto |
| New Hampshire | 106°F / 41°C | July 4, 1911 | Nashua | -47°F / -44°C | January 29, 1934 | Mount Washington |
| New Jersey | 110°F / 43°C | July 10, 1936 | Runyon | -34°F / -37°C | January 5, 1934 | River Vale |
| New Mexico | 122°F / 50°C | June 27, 1994 | Lakewood | -50°F / -46°C | February 1, 1951 | Gavilan |
| New York | 108°F / 42°C | July 22, 1926* | Troy | -52°F / -46°C | February 18, 1979 | Old Forge |
| North Carolina | 110°F / 43°C | August 21, 1983 | Fayetteville | -34°F / -37°C | January 21, 1985 | Mount Mitchell |
| North Dakota | 121°F / 49°C | July 6, 1936 | Steele | -60°F / -51°C | February 15, 1936 | Parshall |
| Ohio | 113°F / 45°C | July 21, 1934* | Gallipolis | -39°F / -39°C | February 10, 1899 | Milligan |
| Oklahoma | 120°F / 49°C | June 27, 1994* | Tipton | -31°F / -35°C | February 10, 2011 | Nowata |
| Oregon | 119°F / 48°C | August 10, 1898* | Pendleton | -54°F / -48°C | February 10, 1933* | Seneca |
| Pennsylvania | 111°F / 44°C | July 10, 1936* | Phoenixville | -42°F / -41°C | January 5, 1904 | Smethport |
| Rhode Island | 104°F / 40°C | August 2, 1975 | Providence | -25°F / -32°C | February 5, 1996 | Greene |
| South Carolina | 111°F / 44°C | June 28, 1954* | Camden | -19°F / -28°C | January 21, 1985 | Caesars Head |
| South Dakota | 120°F / 49°C | July 15, 2006* | Usta (near) | -58°F / -50°C | February 17, 1936 | McIntosh |
| Tennessee | 113°F / 45°C | August 9, 1930* | Perryville | -32°F / -36°C | December 30, 1917 | Mountain City |
| Texas | 120°F / 49°C | June 28, 1994* | Monahans | -23°F / -31°C | February 8, 1933* | Seminole |
| Utah | 117°F / 47°C | July 5, 1985 | Saint George | -69°F / -56°C | February 1, 1985 | Peter Sinks |
| Vermont | 105°F / 41°C | July 4, 1911 | Vernon | -50°F / -46°C | December 30, 1933 | Bloomfield |
| Virginia | 110°F / 43°C | July 15, 1954 | Balcony Falls | -30°F / -34°C | January 22, 1985 | Mountain Lake |
| Washington | 118°F / 48°C | August 5, 1961* | Grant County, Ice Harbor Dam | -48°F / -44°C | December 30, 1968 | Mazama, Winthrop |
| West Virginia | 112°F / 44°C | July 10, 1936* | Martinsburg | -37°F / -38°C | December 30, 1917 | Lewisburg |
| Wisconsin | 114°F / 46°C | July 13, 1936 | Wisconsin Dells | -55°F / -48°C | February 4, 1996 | Couderay |
| Wyoming | 114°F / 46°C | July 12, 1900 | Basin | -66°F / -54°C | February 9, 1933 | Riverside |
*Also on earlier date or dates in that state