Thornton\u2019s average temperature for the month came in at 64.8 degrees.\u00a0 Denver\u2019s long term average for the month is 63.4 degrees so we were a good bit above that.<\/p>\n
Out at DIA where the Mile High City\u2019s official measurements are kept, it was considerably warmer with an average this year 67.8 degrees. That puts the month in the books as the sixth warmest September on record \u2013 with the asterisk that should always comes with Denver\u2019s stats since the station moved to the airport.<\/p>\n
Thornton saw its warmest temperature of 94.4 degrees on the 16th of the month and its coldest of 35.3 degrees on the 29th.\u00a0 Denver saw its maximum for the month of 96 degrees on the 13th and its coldest reading of 36 degrees on the 29th.<\/p>\n
Officially, Denver saw four records tied or broken.\u00a0 On the 10th the record high of 93 degrees was tied, a 93 degree reading on the 11th broke the record high for the date and a high of 94 degrees on the 14th was tied the record high. Lastly, a record high minimum of 64 degrees was set on the morning of the 13th.<\/p>\n
In terms of precipitation, Denver averages 0.96 inches during September.\u00a0 In Thornton, we saw 1.02 inches fall in the bucket with virtually all of that coming on two days. Denver was much drier with only 0.18 inches.<\/p>\n
Click here to view Thornton\u2019s September 2018 climate report<\/a>.<\/p>\n High pressure was a recurring theme for the month of September in 2018.\u00a0 This was the driving force behind many days with above normal temperatures and a mere three days with precipitation. The ridge seemed to show little movement in the month keeping moisture at bay and any cooler air to the north. The middle … Continue reading September 2018 weather recap: Warmer than normal but near average precipitation<\/span> ![\"Thornton,](\"https:\/\/www.thorntonweather.com\/blog\/wp-content\/uploads\/2018\/10\/2018-09-Temps-590x290.jpg\")
<\/a>![\"Thornton,](\"https:\/\/www.thorntonweather.com\/blog\/wp-content\/uploads\/2018\/10\/2018-09-Precip-590x295.jpg\")
<\/a>CLIMATE REPORT\r\nNATIONAL WEATHER SERVICE DENVER\/BOULDER CO\r\n303 PM MDT MON OCT 1 2018\r\n\r\n...................................\r\n\r\n...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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 97 09\/03\/2017\r\n 09\/06\/2013\r\n 09\/05\/2013\r\n LOW 17 09\/29\/1985\r\nHIGHEST 96 09\/13 91 5 97 09\/03\r\nLOWEST 36 09\/29 35 1 40 09\/20\r\n 09\/25\r\nAVG. MAXIMUM 82.7 78.5 4.2 79.0\r\nAVG. MINIMUM 52.8 48.3 4.5 51.3\r\nMEAN 67.8 63.4 4.4 65.1\r\nDAYS MAX >= 90 9 3.4 5.6 9\r\nDAYS MAX <= 32 0 0.0 0.0 0\r\nDAYS MIN <= 32 0 0.8 -0.8 0\r\nDAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 5.61 2013 MINIMUM T 1892 1944 TOTALS 0.18 0.96 -0.78 1.26 DAILY AVG. 0.01 0.03 -0.02 0.04 DAYS >= .01 5 6.5 -1.5 6\r\nDAYS >= .10 0 3.3 -3.3 2\r\nDAYS >= .50 0 0.6 -0.6 1\r\nDAYS >= 1.00 0 0.1 -0.1 0\r\nGREATEST\r\n 24 HR. TOTAL 0.08 09\/19\r\n\r\nSNOWFALL (INCHES)\r\n TOTAL 0.0\r\nRECORD\r\n TOTAL 17.2 1971 1.3\r\n\r\nDEGREE_DAYS\r\nHEATING TOTAL 69 125 -56 122\r\n SINCE 7\/1 78 141 -63 130\r\nCOOLING TOTAL 160 76 84 131\r\n SINCE 1\/1 1022 764 258 880\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 9.7\r\nRESULTANT WIND SPEED\/DIRECTION 3\/170\r\nHIGHEST WIND SPEED\/DIRECTION 37\/270 DATE 09\/19\r\nHIGHEST GUST SPEED\/DIRECTION 49\/270 DATE 09\/19\r\n\r\nSKY COVER\r\nAVERAGE SKY COVER 0.40\r\nNUMBER OF DAYS FAIR 13\r\nNUMBER OF DAYS PC 13\r\nNUMBER OF DAYS CLOUDY 4\r\n\r\nAVERAGE RH (PERCENT) 43\r\n\r\nWEATHER CONDITIONS. NUMBER OF DAYS WITH\r\nTHUNDERSTORMS 5 MIXED PRECIP 0\r\nHEAVY RAIN 0 MODERATE RAIN 0\r\nLIGHT RAIN 9 FREEZING RAIN 0\r\nLT FREEZING RAIN 0 HAIL 0\r\nHEAVY SNOW 0 SNOW 0\r\nLIGHT SNOW 0 FOG W\/VIS <=1\/4 MILE 3\r\nFOG 5 HAZE 2\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":"