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Maps of Monthly and All-Time Records |
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For additional records not included in the selected list below please refer to the U.S. Records page. |
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| Location | Record Type | New Record Date | New Record | Old Record | Old Record Date |
| Portland Jetport, ME | Fourth warmest December temp on record | December 3, 2009 | 68°F | 66°F | December 1, 2001;the warmest occurred on December 6, 2001 with 71°F |
| Portland Jetport, ME | Tied third warmest average temp record for the month | December 3, 2009 | avg of 56°F | avg of 56°F | December 23, 1990;the warmest occurred on December 6, 2001 with 59°F |
| West Palm Beach, FL | Tied all-time warmest temp record for the month | December 9, 2009 | 90°F | 90°F | December 1941 |
| Daytona Beach, FL | All-time high min temp record for the month | December 9, 2009 | 72°F | 71°F | December 2, 1991 |
| Midland, TX | Tied seventh coldest December on record | December 2009 | 41.1°F | 41.1°F | December 1985 |
| Barstow-Daggett AP, NV | Eight coldest December on record | December 2009 | avg of 44.8°F | N/A | N/A;the coldest occurred in 1990 with 41.1°F |
| Las Vegas, NV | Tied second warmest year on record | 2009 | avg of 70.0°F | avg of 70.0°F | 2003, 2005 and 2008;the warmest occurred in 2007 with 71.1°F |
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| Location | Record Type | New Record Date | New Record | Old Record | Old Record Date |
| New Orleans Int'l AP, LA | Wettest December on record | December 2009 | 22.48 inches | 10.77 inches | December 1967 |
| New Orleans Int'l AP, LA | All-time wettest December on record | December 2009 | 22.48 inches | 21.18 inches | December 1967 |
| Columbus, GA | Annual rainfall record | 2009 | 74.77 inches | 73.22 inches | 1964 |
| New Iberia, LA | Wettest December on record | December 2009 | 16.35 inches | 14.06 inches | December 1971 |
| New Iberia, LA | All-time wettest month on record | December 2009 | 16.35 inches | 16.02 inches | June 1978 |
| Little Rock/Adams Field, AR | Annual rainfall record | 2009 | 75.93 inches | 75.54 inches | 1882 |
| North Little Rock, AR | Annual rainfall record | 2009 | 74.22 inches | 63.65 inches | 1990 |
| Roanoke, VA | Wettest December on record | December 2009 | 8.22 inches | 7.10 inches | December 1948 |
| Blacksburg, VA | Wettest December on record | December 2009 | 6.66 inches | 6.03 inches | December 1973 |
| Pinson, AL | Annual rainfall record | 2009 | 75.83 inches | 74.87 inches | 1961 |
| Charleston/Downtown, SC | Wettest December on record | December 2009 | 10.11 inches | 5.53 inches | December 1973 |
| Charleston AP, SC | Second wettest December on record | December 2009 | 10.06 inches | N/A | N/A;the wettest occurred in 1941 with 11.08 inches |
| Savannah AP, GA | Wettest December on record | December 2009 | 10.71 inches | 9.44 inches | December 2007 |
| Philadelphia, PA | Wettest December on record | December 2009 | 8.86 inches | 8.47 inches | December 1996 |
| Philadelphia, PA | Fifth wettest year on record | December 2009 | 52.50 inches | 52.13 inches | December 1975;the wettest occurred in 1996 with 56.45 inches |
| Wilmington, NJ | Wettest December on record | December 2009 | 8.58 inches | 7.96 inches | December 1996 |
| Allentown, NJ | Seventh wettest December on record | December 2009 | 6.30 inches | 5.75 inches | December 1953;the wettest occurred in 1973 with 7.89 inches |
| Atlantic City, NJ | Wettest December on record | December 2009 | 9.99 inches | 8.24 inches | December 1914 |
| Atlantic City, NJ | Third wettest year on record | December 2009 | 61.55 inches | 55.91 inches | December 1953;the wettest occurred in 1958 with 67.17 inches |
| Trenton, NJ | Tied seventh wettest December on record | December 2009 | 6.42 inches | 6.42 inches | December 1879;the wettest occurred in 1996 with 9.50 inches |
| Las Vegas, NV | Eight driest year on record | December 2009 | 1.59 inches | N/A | N/A;the driest occurred in 1953 with 0.56 inch(es) |
| Barstow-Daggett AP, NV | Seventh driest year on record | December 2009 | 1.54 inches | N/A | N/A;the driest occurred in 2006 with 0.75 inch(es) |
| Needles AP, NV | Ninth driest year on record | December 2009 | 2.26 inches | N/A | N/A;the driest occurred in 2002 with 0.92 inch(es) |
| Asheville, NC | Wettest December on record | December 2009 | 9.16 inches | 8.48 inches | December 1973 |
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| Location | Record Type | New Record Date | New Record | Old Record | Old Record Date |
| Lake Charles, LA | Earliest measurable snowfall record | December 4, 2009 | 0.2 inch(es) | 0.4 inch(es) | December 11, 2008 |
| Valdez, AK | December highest 24hr snowfall record | December 14, 2009 | 38.7 inches | 31.7 inches | December 30, 2002 |
| Valdez, AK | Second all-time highest 24hr snowfall record | December 14, 2009 | 38.7 inches | N/A | N/A;the highest occurred on January 16, 1990 with 47.5 inches |
| Valdez, AK | All-time second highest three consecutive days snowfall record | December 14-16, 2009 | 68.2 inches | 66.2 inches | Aanuary 15-17, 1990;the highest occurred on February 4-6, 1996 with 74.6 inches |
| Washington Dulles, DC | December calender day snowfall record | December 13, 2009 | 13.0 inches | 10.6 inches | December 12, 1964 |
| Philadelphia, PA | Snowiest December on record | December 2009 | 24.1 inches | 22.4 inches | December 1909 |
| Washington Reagan Nat'l AP, DC | December calender day snowfall record | December 19, 2009 | 15.0 inches | 11.5 inches | December 17, 1932 |
| Washington Reagan Nat'l AP, DC | December monthly snowfall record | December 20, 2009 | 16.6 inches | 16.2 inches | December 1962 |
| Jackson, KY | Snowiest December on record | December 2009 | 17.6 inches | 11.5 inches | December 1993 |
| Jackson, KY | December max snow depth record | December 19-20, 2009 | 10.0 inches | 4.0 inches | December 1993 |
| Jackson, KY | December 24hr snowfall record | December 18-19, 2009 | 11.6 inches | 4.9 inches | December 1997 |
| Philadelphia, PA | Winter seasonal snowfall record | December 2009 | 23.2 inches | 19.3 inches | N/A |
| Oklahoma City, OK | All-time highest 24hr snowfall record | December 24, 2009 | 14.1 inches | 11.3 inches | March 19, 1924 |
| Oklahoma City, OK | Greatest snowfall storm on record | December 24, 2009 | 14.1 inches | 12.1 inches | January 5-7, 1988 |
| Sioux City, SD | Second biggest snow storm on record | December 23-26, 2009 | 20.7 inches | 18.4 inches | March 15, 2004;the biggest occurred on April 9-10, 1913 with 22.9 inches |
| Sioux City, SD | December snowfall record | December 2009 | 32.4 inches | 26.4 inches | December 1897 |
| Sioux Falls, SD | Fourth biggest snow storm on record | December 23-26, 2009 | 19.0 inches | 18.9 | March 9-10, 1956;the biggest occurred on February 16-18, 1962 with 32.2 inches |
| Sioux Falls, SD | Second heaviest December snowfall record | December 2009 | 27.6 inches | N/A | N/A;the heaviest occurred in 1968 with 41.1 inches |
| Des Moines, IA | December snowfall record | December 2009 | 27.7 inches | 26.9 | December 2000 |
| Des Moines, IA | All-time third highest snowfall record | December 2009 | 27.7 inches | N/A | N/A;the highest occureed in January 1886 with 37.0 inches |
| Yankton, SD | December snowfall record | December 2009 | 31.1 inches | 27.6 inches | December 1968 |
| Huron, SD | Tied December snowfall record | December 2009 | 26.0 inches | 26.0 inches | December 1968 |
| Topeka, KS | December snowfall record | December 2009 | 19.2 inches | 18.8 inches | December 1983 |
| Concordia, KS | December snowfall record | December 2009 | 20.3 inches | 16.7 inches | December 1983 |
| Grand Island, NE | December snowfall record | December 2009 | 26.5 inches | 26.0 inches | December 1973 |
| Wilmington, NJ | Second snowiest December on record | December 2009 | 19.7 inches | 15.0 inches | December 1932;the snowiest occurred in 1966 with 21.5 inches |
| Allentown, NJ | Sixth snowiest December on record | December 2009 | 15.4 inches | 15.2 inches | December 2002;the snowiest occurred in 1966 with 28.4 inches |
| Atlantic City, NJ | Second snowiest December on record | December 2009 | 12.4 inches | 10.5 inches | December 2000;the snowiest occurred in 1935 with 17.5 inches |
| King Salmon, AK | Second least snowiest December on record | December 2009 | 1.5 inches | N/A | N/A;the least snow occurred in 2000 with 0.6 inch(es) |
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| Location | Record Type | New Record Date | New Record | Old Record | Old Record Date |
| None Reported. |
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| Location | Record Type | New Record Date | New Record | Old Record | Old Record Date |
| Grand Rapids, MI | Lowest barometric pressure for the month | December 9, 2009 | 28.86 inches | 28.92 inches | December 1965 |
| Little Rock/Adams Field, AR | Lowest sea-level pressure for the month | December 24, 2009 | 29.27 inches | 29.33 inches | December 27, 1968 |
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| Location | Record Type | New Record Date | New Record | Old Record | Old Record Date |
| None Repored. |
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