Overall, Thornton\u2019s average temperature for the month was 30.8 degrees. This was nearly a full degree above Denver\u2019s long term December average of 30.0 degrees. Out at DIA where the Mile High City\u2019s official measurements are taken, it was a good bit warmer with an average of 32.5 degrees.<\/p>\n
Temperatures in Thornton ranged from a high of 60.6 degrees on the 21st down to a low of 4.5 degrees on the morning of the 29th. Denver\u2019s warmest reading of 63 degrees also came on the 21st and its coldest, 0 degrees, on the 31st.<\/p>\n
Denver averages 0.35 inches of precipitation during December. Thornton fell well short with a mere 0.07 inches. Out at the airport, even less was realized with 0.03 being recorded. This puts December 2018 into the books as one of the driest Decembers ever recorded. <\/p>\n
Ten driest December’s in Denver weather history (since 1872):<\/strong> Thornton recorded a mere 0.9 inches of snow during the month, the majority of which fell on the last day of the month. Denver saw 0.5 inches, all on the 31st.\u00a0 Both fall well short of the long term Denver average for December snowfall of 8.5 inches and put December 2018 on the list of the ten least snowy Decembers recorded. <\/p>\n Ten least snowy December’s in Denver weather history:<\/strong> Click here to view Thornton\u2019s December 2018 climate report<\/a>.<\/strong><\/p>\n Thornton\u2019s December was lacking in terms of any sort of real weather drama. Temperatures were relatively mild for much of the month and precipitation was fleeting. Above normal temperatures were the general rule for the first part of the month. It was only the last week of the month when Arctic air arrived and we … Continue reading December 2018 weather recap: Warmer and much drier than normal<\/span>
\nINCHES
\n0.00 – 1881
\nTRACE – 1905
\n0.01 – 1906, 1895
\n0.03 – 1977, 1931, 2018
\n0.04 – 2004, 1890
\n0.05 – 2002, 1995<\/p>\n
\nTRACE – 1905, 1906, 2002
\n0.1 – 1928
\n0.4 – 1890
\n0.5 – 1935, 2018
\n0.6 – 1995
\n0.7 – 1977, 1895<\/p>\n![\"Thornton,](\"https:\/\/www.thorntonweather.com\/blog\/wp-content\/uploads\/2019\/01\/2018-12-Temps-590x289.jpg\")
<\/a>![\"Thornton,](\"https:\/\/www.thorntonweather.com\/blog\/wp-content\/uploads\/2019\/01\/2018-12-Precip-590x295.jpg\")
<\/a>CLIMATE REPORT\r\nNATIONAL WEATHER SERVICE DENVER\/BOULDER CO\r\n936 AM MST TUE JAN 1 2019\r\n\r\n...................................\r\n\r\n...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...\r\n\r\nCLIMATE NORMAL PERIOD 1981 TO 2010\r\nCLIMATE RECORD PERIOD 1872 TO 2018\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 63 12\/21 62 1 69 12\/12\r\nLOWEST 0 12\/31 -4 4 -4 12\/24\r\nAVG. MAXIMUM 46.1 42.8 3.3 48.3\r\nAVG. MINIMUM 18.8 17.1 1.7 18.0\r\nMEAN 32.5 30.0 2.5 33.2\r\nDAYS MAX >= 90 0 0.0 0.0 0\r\nDAYS MAX <= 32 4 5.8 -1.8 4\r\nDAYS MIN <= 32 31 29.4 1.6 28\r\nDAYS MIN <= 0 1 2.0 -1.0 1\r\n\r\nPRECIPITATION (INCHES)\r\nRECORD\r\n MAXIMUM 5.21 1913\r\n MINIMUM 0.00 1881\r\nTOTALS 0.03 0.35 -0.32 0.21\r\nDAILY AVG. 0.00 0.01 -0.01 0.01\r\nDAYS >= .01 1 4.1 -3.1 4\r\nDAYS >= .10 0 1.1 -1.1 1\r\nDAYS >= .50 0 0.1 -0.1 0\r\nDAYS >= 1.00 0 0.0 0.0 0\r\nGREATEST\r\n 24 HR. TOTAL 0.03 12\/31 TO 12\/31\r\n\r\nSNOWFALL (INCHES)\r\nTOTALS 0.5 8.5\r\n\r\nDEGREE_DAYS\r\nHEATING TOTAL 999 1086 -87 979\r\n SINCE 7\/1 2372 2468 -96 2150\r\nCOOLING TOTAL 0 0 0 0\r\n SINCE 1\/1 1026 769 257 881\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 9.6\r\nRESULTANT WIND SPEED\/DIRECTION 2\/222\r\nHIGHEST WIND SPEED\/DIRECTION 39\/010 DATE 12\/12\r\nHIGHEST GUST SPEED\/DIRECTION 53\/010 DATE 12\/12\r\n\r\nSKY COVER\r\nPOSSIBLE SUNSHINE (PERCENT) MM\r\nAVERAGE SKY COVER 0.50\r\nNUMBER OF DAYS FAIR 6\r\nNUMBER OF DAYS PC 22\r\nNUMBER OF DAYS CLOUDY 3\r\n\r\nAVERAGE RH (PERCENT) 51\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":"