Climatological Report (Monthly)
Issued by NWS Portland, ME

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000 CXUX51 KGYX 061555 CLMGYX PWMCLMGYX 000 TTAA00 KGYX 031518 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 1055 AM EST SAT JAN 6 2018 ................................... ...THE GRAY ME CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1995 TO 2017 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL ............................................................. TEMPERATURE (F) RECORD HIGH 69 12/07/1998 LOW -10 12/29/2017 12/28/2017 03/03/2000 HIGHEST 53 12/06 55 -2 51 LOWEST -10R 12/29 3 -13 -6 12/28 AVG. MAXIMUM 28.4 34.8 -6.4 32.7 AVG. MINIMUM 13.8 19.8 -6.0 18.1 MEAN 21.1 27.3 -6.2 25.4 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 17 12.5 4.5 16 DAYS MIN <= 32 30 27.9 2.1 28 DAYS MIN <= 0 5 0.6 4.4 3 PRECIPITATION (INCHES) RECORD MAXIMUM 7.85 1996 MINIMUM 1.87 1998 TOTALS 3.47 4.06 -0.59 4.82 DAILY AVG. 0.11 0.13 -0.02 0.16 DAYS >= .01 13 11.8 1.2 14 DAYS >= .10 8 7.7 0.3 9 DAYS >= .50 3 2.9 0.1 3 DAYS >= 1.00 0 1.5 -1.5 2 GREATEST 24 HR. TOTAL 0.65 12/12 SNOWFALL (INCHES) RECORDS TOTAL 39.0 1995 TOTALS 23.6 18.3 5.3 35.5 SINCE 7/1 24.8 21.4 3.4 36.8 SNOWDEPTH AVG. 6 DAYS >= TRACE 12 7.5 4.5 15 DAYS >= 1.0 6 4.5 1.5 8 GREATEST SNOW DEPTH 13 12/31 21 12/30 12/29 24 HR TOTAL 6.6 12/25 DEGREE_DAYS HEATING TOTAL 1354 1169 185 1221 SINCE 7/1 2547 2666 -119 2500 COOLING TOTAL 0 0 0 0 SINCE 1/1 531 389 142 607 .............................................................. - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && THE COLD WEATHER THAT HAD LASTED MUCH OF NOVEMBER BEGAN TO EASE UP IN EARLY DECEMBER. FOR THE FIRST WEEK OF THE MONTH THE TEMPERATURE WARM INTO THE 40S AND EVEN THE 50S. THAT WAS SOON TO CHANGE. THE FIRST SIGNIFICANT SNOWSTORM OF THE SEASON ARRIVED ON DECEMBER 9 WHEN MORE THAN 5 INCHES OF SNOW FELL. ANOTHER STORM BROUGHT SNOW CHANGING TO FREEZING RAIN A FEW DAYS LATER ON THE 12TH, FOLLOWED BY A WEEK OF BELOW FREEZING TEMPERATURES. THE NEXT TWO STORMS BROUGHT SIMILAR CONDITIONS WITH SNOW CHANGING TO FREEZING RAIN ON THE 18TH AND AGAIN ON THE 22ND AND 23RD. BY CHRISTMAS MORNING ANOTHER SNOW STORM HAD ARRIVED, THIS ONE BRINGING ONLY SNOW WITH SEVERAL INCHES ACCUMULATING IN JUST A FEW HOURS. BRUTALLY COLD ARCTIC AIR POURED IN BEHIND THIS STORM. THE TEMPERATURE DID NOT RISE ABOVE FREEZING FOR THE REST OF THE MONTH, WITH THE LAST 5 DAYS OF THE MONTH FAILING TO RISE ABOVE 15 DEGREES AND FALLING TO ZERO OR COLDER AT NIGHT. THIS WAS THE COLDEST AIR YET OBSERVED IN THE MONTH OF DECEMBER AT THE NATIONAL WEATHER SERVICE OFFICE IN GRAY, WITH 4 OF THE TOP 5 COLDEST DECEMBER TEMPERATURES OBSERVED THIS MONTH. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 21.1 DEGREES WHICH WAS 6.2 DEGREES BELOW NORMAL AND THE COLDEST DECEMBER YET RECORDED IN THE SHORT 23-YEAR HISTORY OF OBSERVATIONS AT THE NATIONAL WEATHER SERVICE OFFICE IN GRAY. UNTIL THIS YEAR, THE COLDEST DECEMBER WAS IN 2013 WHEN THE AVERAGE TEMPERATURE WAS 21.8 DEGREES. THE WARMEST WAS IN 2015 WHEN IT WAS 35.8 DEGREES. THE FOLLOWING TABLE LISTS THE COLDEST TEMPERATURES ON RECORD FOR THE MONTH OF DECEMBER. COLDEST DECEMBER TEMPERATURES IN GRAY (SINCE 1995)... RANK TEMP DATE 1 -10 DEC 29, 2017 <=== 2 -10 DEC 28, 2017 <=== 3 -8 DEC 30, 2017 <=== 4 -6 DEC 31, 2017 <=== -6 DEC 16, 2016 -6 DEC 31, 1998 7 -5 DEC 17, 2013 -5 DEC 21, 2004 9 -4 DEC 27, 2017 <=== -4 DEC 31, 2013 A TOTAL OF 3.47 INCHES OF PRECIPITATION FELL WHICH WAS 0.59 INCHES BELOW NORMAL AND THE DRIEST DECEMBER SINCE 2006. THE HEAVIEST PRECIPITATION FELL ON DECEMBER 22 AND 23 WHEN 0.75 INCHES OF MELTED SNOW AND FREEZING RAIN FELL. THE DRIEST DECEMBER ON RECORD WAS IN 1998 WHEN ONLY 1.87 INCHES FELL. THE WETTEST WAS IN 1996 WHEN 7.85 INCHES WAS RECORDED. A TOTAL OF 23.6 INCHES OF SNOW FELL WHICH WAS 5.3 INCHES ABOVE NORMAL. THE HEAVIEST SNOW FELL ON THE 25TH WHEN 6.6 INCHES WAS MEASURED. THE SNOWIEST DECEMBER ON RECORD WAS IN 1995 WHEN 39.0 INCHES WAS RECORDED. THE LEAST SNOWY WAS IN 1999 WHEN ONLY A TRACE WAS OBSERVED. $$ KIMBLE

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