Dangerous heat is expected across areas in Texas and from Washington through California. Several daily high temperature records are expected to be either tied or broken in the West. Monsoonal showers and thunderstorms may result in flash flooding and debris flows over the Southwestern U.S. through Friday. Locally heavy rain is expected from thunderstorms in the Southeast. Read More >
| MONTH | HIGHEST PRESSURE | DATE | LOWEST PRESSURE | DATE |
|---|---|---|---|---|
| January | 30.97 in. | January 15, 1972 | 28.93 in. | January 25, 1975 |
| February | 30.97 in. | February 16, 1989 | 28.95 in. | February 9, 1960 |
| March | 30.83 in. | March 5, 1948 | 28.89 in. | March 11, 1923 |
| April | 30.79 in. | April 15, 1981 | 28.94 in. | April 3, 1982 |
| May | 30.56 in. | May 4, 1966 | 29.10 in. | May 27, 1973 |
| June | 30.57 in. | June 10, 1913 | 29.30 in. | June 1, 1936 |
| July | 30.42 in. | July 30, 1936 | 29.45 in. | July 9, 1926 |
| August | 30.45 in. | August 31, 1967 | 29.53 in. | August 30, 1956 |
| September | 30.63 in. | September 30, 1947 | 29.33 in. | September 25, 1941 |
| October | 30.69 in. | October 6, 1935 | 28.98 in. | October 26, 2010 |
| November | 30.91 in. | November 13, 1986 | 29.04 in. | November 28, 1918 |
| December | 31.01 in. | December 20, 1924 | 28.99 in. | December 15, 1971 December 15, 1987 |
Since 1905.
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