{"id":2252,"date":"2010-01-04T06:25:01","date_gmt":"2010-01-04T13:25:01","guid":{"rendered":"http:\/\/www.thorntonweather.com\/blog\/?p=2252"},"modified":"2010-01-04T06:26:34","modified_gmt":"2010-01-04T13:26:34","slug":"december-2009-goes-into-the-books-as-seventh-coldest-on-record","status":"publish","type":"post","link":"https:\/\/www.thorntonweather.com\/blog\/thornton-weather\/december-2009-goes-into-the-books-as-seventh-coldest-on-record\/","title":{"rendered":"December 2009 goes into the books as seventh coldest on record"},"content":{"rendered":"<p><a href=\"http:\/\/www.examiner.com\/x-219-Denver-Weather-Examiner~y2010m1d3-Denver-records-seventh-coldest-December-in-history\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" title=\"Denver records seventh coldest December in history \" src=\"http:\/\/image3.examiner.com\/images\/blog\/EXID219\/images\/RecordCold20100103.jpg\" alt=\"\" width=\"275\" height=\"387\" \/><\/a>For the second time in the past three months, Denver has experienced monthly average temperatures in the \u2018top 10 coldest\u2019 category. In October, <a href=\"http:\/\/www.examiner.com\/x-219-Denver-Weather-Examiner~y2009m11d2-October-2009-was-Denvers-second-coldest-and-fifth-snowiest-on-record\" target=\"_blank\">the Mile High City saw its second coldest October on record<\/a> since record keeping began in 1882. Now Denver has just wrapped up its seventh coldest December in history.<\/p>\n<p>Denver\u2019s average December 2009 temperature was 24.1 degrees \u2013 a chilly 6.2 degrees below the normal average of 30.3 degrees. That puts the month into the books as the seventh coldest December on record (image right).\u00a0 Thornton was just a touch colder having recorded <a href=\"http:\/\/www.thorntonweather.com\/climatedataout122009.html\">an average temperature of 23.8 degrees<\/a>.<\/p>\n<p>Temperatures during the month ranged from a high temperature of 59 degrees on the 1st down to a low of -17 on the 9th. Overall, the majority of days during the month saw below normal temperatures.<\/p>\n<p>In terms of snowfall, the month did finish above average but not in record setting territory. The National Weather Service recorded 11.1 inches of snowfall at the official monitoring station at Denver International Airport. This was 2.4 inches above the average of 8.7 inches for December.\u00a0 In Thornton, we received a bit more snow than DIA.\u00a0 15.3 inches was recorded at ThorntonWeather.com of which the single biggest even was the pre-Christmas storm which dumped 7.5 inches.<\/p>\n<p>\u00a0The snow we did receive however was rather dry and as such we finished the month below normal for precipitation. DIA recorded 0.45 inch of precipitation which is 0.18 inch below normal.\u00a0 Here again, because of the additional snowfall, Thornton fared a bit better with 0.5 inch of precipitation.\u00a0<\/p>\n<ul>\n<li><a href=\"http:\/\/www.thorntonweather.com\/climatedataout122009.html\">Click here to view the ThorntonWeather.com December 2009 climate report<\/a><\/li>\n<\/ul>\n<pre>CLIMATE REPORT\r\nNATIONAL WEATHER SERVICE BOULDER, CO                                 \r\n510 PM MST SAT JAN 2 2010\r\n\r\n................................... \r\n\r\n...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2009...\r\n\r\nCLIMATE NORMAL PERIOD 1971 TO 2000\r\nCLIMATE RECORD PERIOD 1872 TO 2009\r\n\r\nWEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR'S         \r\n                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)      \r\n                                          NORMAL                      \r\n................................................................\r\nTEMPERATURE (F)\r\nRECORD\r\n HIGH              79   12\/05\/1939                                    \r\n LOW              -25   12\/22\/1990                                    \r\n                        12\/24\/1876                                    \r\nHIGHEST            59   12\/21        79     -20       69  12\/02       \r\n                        12\/01                                         \r\nLOWEST            -17   12\/09       -25       8      -19  12\/15       \r\nAVG. MAXIMUM     36.4              44.1    -7.7     41.0              \r\nAVG. MINIMUM     11.9              16.4    -4.5     12.3              \r\nMEAN             24.1              30.3    -6.2     26.6              \r\nDAYS MAX >= 90      0               0.0     0.0        0              \r\nDAYS MAX <= 32     15               5.3     9.7       10              \r\nDAYS MIN <= 32     31              29.2     1.8       30              \r\nDAYS MIN <= 0       6               2.8     3.2        6              \r\n\r\nPRECIPITATION (INCHES)\r\nRECORD\r\n MAXIMUM         5.21   1913                                          \r\n MINIMUM         0.00   1881                                          \r\nTOTALS           0.45              0.63   -0.18     0.24              \r\nDAILY AVG.       0.01              0.02   -0.01     0.01              \r\nDAYS >= .01         7               5.3     1.7        6              \r\nDAYS >= .10         2                MM      MM        0              \r\nDAYS >= .50         0                MM      MM        0              \r\nDAYS >= 1.00        0                MM      MM        0              \r\nGREATEST\r\n 24 HR. TOTAL    0.20   12\/22 TO 12\/23        0.10  12\/13 TO 12\/14       \r\n\r\nSNOWFALL (INCHES)\r\nRECORDS\r\n TOTAL           57.4   1913  SNOWIEST DENVER MONTH SINCE 1881\r\nTOTALS           11.1                8.7              7.1             \r\n\r\nDEGREE_DAYS\r\nHEATING TOTAL    1260              1078     182     1179              \r\n SINCE 7\/1       2739              2486     253     2367              \r\nCOOLING TOTAL       0                 0       0        0              \r\n SINCE 1\/1        533               696    -163      825              \r\n\r\nFREEZE DATES\r\nRECORD\r\n EARLIEST     09\/08\/1962                                              \r\n LATEST       06\/08\/2007                                              \r\nEARLIEST                        10\/07                                 \r\nLATEST                          05\/05                                 \r\n.................................................................\r\n\r\nWIND (MPH)\r\nAVERAGE WIND SPEED              8.8\r\nRESULTANT WIND SPEED\/DIRECTION   3\/217\r\nHIGHEST WIND SPEED\/DIRECTION    43\/220    DATE  12\/13\r\nHIGHEST GUST SPEED\/DIRECTION    49\/220    DATE  12\/13\r\n\r\nSKY COVER\r\nPOSSIBLE SUNSHINE (PERCENT)   MM *SUNSHINE DATA N\/A EFFECTIVE 10\/1\r\n\r\nNUMBER OF DAYS FAIR            4\r\nNUMBER OF DAYS PC             21\r\nNUMBER OF DAYS CLOUDY          6\r\n\r\nAVERAGE RH (PERCENT)     61\r\n\r\nWEATHER CONDITIONS. NUMBER OF DAYS WITH \r\nTHUNDERSTORM              0     MIXED PRECIP               0\r\nHEAVY RAIN                0     RAIN                       0\r\nLIGHT RAIN                0     FREEZING RAIN              0\r\nLT FREEZING RAIN          0     HAIL                       0\r\nHEAVY SNOW                0     SNOW                       2\r\nLIGHT SNOW               10     SLEET                      0\r\nFOG                      11     FOG W\/VIS <= 1\/4 MILE      1\r\nHAZE                      7                                           \r\n                                                                    \r\n-  INDICATES NEGATIVE NUMBERS.                                      \r\nR  INDICATES RECORD WAS SET OR TIED.                                \r\nMM INDICATES DATA IS MISSING.                                       \r\nT  INDICATES TRACE AMOUNT.   <\/pre>\n","protected":false},"excerpt":{"rendered":"<p>For the second time in the past three months, Denver has experienced monthly average temperatures in the \u2018top 10 coldest\u2019 category. In October, the Mile High City saw its second coldest October on record since record keeping began in 1882. Now Denver has just wrapped up its seventh coldest December in history. Denver\u2019s average December &hellip; <a href=\"https:\/\/www.thorntonweather.com\/blog\/thornton-weather\/december-2009-goes-into-the-books-as-seventh-coldest-on-record\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">December 2009 goes into the books as seventh coldest on record<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,7],"tags":[156,24,132],"_links":{"self":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/2252"}],"collection":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/comments?post=2252"}],"version-history":[{"count":2,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/2252\/revisions"}],"predecessor-version":[{"id":2254,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/2252\/revisions\/2254"}],"wp:attachment":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/media?parent=2252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/categories?post=2252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/tags?post=2252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}