Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >
| Temperature(°F) | Date |
|---|---|
| 113 | July 15, 1936 |
| 110 | July 14, 1936 |
| 109 | July 13, 1936 |
| 108 | July 11, 1936 |
| 107 | July 27, 1930 July 12, 1936 |
| Dew Point (°F) | Date |
|---|---|
| 83 | August 24, 2023 July 24, 2016 August 27, 1990 |
| 82 | July 27, 2023 July 20, 2017 July 13, 1995 |
| Heat Index (°F) | Date |
|---|---|
| 121 | August 24, 2023 |
| 119 | July 13, 1995 |
| 117 | July 29, 1999 July 12, 1980 |
| 116 | July 24, 2016 July 13, 1981 |
| 115 | July 19, 2011 July 12, 1995 August 27, 1990 July 28, 1983 July 14, 1980 July 7, 1980 |
| NOTE: Based on hourly temperature and dew point observations, since this is not directly measured. | |
| Rank | Most | Year | Rank | Least | Year |
|---|---|---|---|---|---|
| 1 | 69 | 1887 | 1 (tie) | 4 | 2004 |
| 2 | 64 | 1936 | 1 (tie) | 4 | 1950 |
| 3 | 62 | 1933 | 1 (tie) | 4 | 1915 |
| 4 | 60 | 1901 | 4 (tie) | 6 | 2009 |
| 5 (tie) | 59 | 1913 | 4 (tie) | 6 | 1951 |
| 5 (tie) | 59 | 1895 | 6 (tie) | 7 | 1992 |
| 7 | 58 | 1899 | 6 (tie) | 7 | 1981 |
| 8 | 57 | 1934 | 6 (tie) | 7 | 1958 |
| 9 | 56 | 1988 | 6 (tie) | 7 | 1907 |
| Most Days | Year | Longest Period Below 100° |
Dates |
|---|---|---|---|
| 23 | 1936 | 4,802 days * |
July 26, 2012 to September 18, 2025 |
| 18 | 1934 | 4,373 days | July 19, 1954 to July 9, 1966 |
| 11 | 1887 | 3,662 days | July 14, 1995 to July 23, 2005 |
| 10 | 1983 | 2,518 days | August 19, 1988 to July 12, 1995 |
| 9 | 1913, 1930, 1931, 1988 |
2,516 days | July 18, 1904 to June 8, 1911 |
* active streak
| Number of Days | Dates |
|---|---|
| 21 | July 11-31, 1916 |
| 20 | July 9-28, 1901 |
| 18 | July 17-August 3, 1987 |
| 17 | July 5-21, 1887 |
| 17 | July 2-18, 1936 |
| 17 | August 11-27, 1936 |
| Number of Days | Dates |
|---|---|
| 14 | July 4-17, 1936 |
| 7 | June 26-July 1, 1931 |
| 6 | July 20-25, 1934 |
| 5 | July 21-25, 1901 |
| 5 | July 26-30, 1916 |
| Date | High Temperature (°F) |
|---|---|
| July 25, 2012 | 102 |
| July 23, 2012 | 104 |
| July 7, 2012 | 104 |
| July 6, 2012 | 103 |
| Temperature (°F) | Earliest 1st Occurrence | Latest 1st Occurrence | Latest Last Occurrence |
|---|---|---|---|
| 70 | Jan. 23, 1909 | Apr. 27, 1951 | Dec. 28, 1984 |
| 80 | Mar. 12, 1990 | May 30, 1995 | Nov. 1, 1888, 1933, 1937, 1950, 2000 |
| 90 | Apr. 10, 1930 | Aug. 14, 2000 | Oct. 15, 1897 |
| 100 | May 31, 1934 | Several years without 100° |
Sep. 15, 1939 |
| Month | 90° Days | Years | 100° Days | Years |
|---|---|---|---|---|
| April | 2 days | 1894, 1899, 1930, 1986 | None | N/A |
| May | 10 days | 1934 | 1 day | 1934 |
| June | 22 days | 1933 | 8 days | 1934 |
| July | 26 days | 1887, 1901, 2012 | 17 days | 1936 |
| August | 23 days | 1947 | 6 days | 1988 |
| September | 13 days | 1897 | 3 days | 1899, 1939 |
| October | 3 days | 1922 | None | N/A |
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