Climatological Report (Monthly)
Issued by NWS Portland, ME

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000 CXUS51 KGYX 032015 CLMCON PWMCLMCON 000 TTAA00 KGYX 031805 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 315 PM EST TUE JAN 3 2017 ................................... ...THE CONCORD NH CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1868 TO 2017 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 73 12/07/1998 LOW -24 12/20/1875 HIGHEST 58 12/01 56 2 62 12/25 LOWEST -9 12/20 -2 -7 17 12/01 AVG. MAXIMUM 37.5 36.3 1.2 45.6 AVG. MINIMUM 17.6 17.2 0.4 29.8 MEAN 27.6 26.8 0.8 37.7 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 8 10.6 -2.6 2 DAYS MIN <= 32 29 28.4 0.6 20 DAYS MIN <= 0 3 2.4 0.6 0 PRECIPITATION (INCHES) RECORD MAXIMUM 7.64 1936 MINIMUM 0.58 1943 TOTALS 3.32 3.20 0.12 4.78 DAILY AVG. 0.11 0.10 0.01 0.15 DAYS >= .01 14 10.9 3.1 16 DAYS >= .10 7 6.4 0.6 10 DAYS >= .50 4 2.3 1.7 3 DAYS >= 1.00 0 0.8 -0.8 1 GREATEST 24 HR. TOTAL 1.04 11/30 TO 12/01 SNOWFALL (INCHES) RECORDS TOTAL 44.5 2007 TOTALS 23.2 14.5 8.7 4.4 SINCE 7/1 23.9 17.1 6.8 4.4 SNOWDEPTH AVG. 6 DAYS >= TRACE 10 6.6 3.4 4 DAYS >= 1.0 5 3.8 1.2 1 GREATEST SNOW DEPTH 15 12/30 24 HR TOTAL 8.3 12/29 TO 12/29 DEGREE_DAYS HEATING TOTAL 1151 1186 -35 834 SINCE 7/1 2403 2746 -343 2114 COOLING TOTAL 0 0 0 0 SINCE 1/1 715 452 263 595 ................................................................. WIND (MPH) AVERAGE WIND SPEED 6.2 HIGHEST WIND SPEED/DIRECTION 32/320 DATE 12/25 HIGHEST GUST SPEED/DIRECTION 41/320 DATE 12/25 SKY COVER AVERAGE SKY COVER 0.50 AVERAGE RH (PERCENT) 66 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 HEAVY RAIN 1 RAIN 2 LIGHT RAIN 5 FREEZING RAIN 1 LT FREEZING RAIN 1 HEAVY SNOW 4 SNOW 6 LIGHT SNOW 11 FOG 17 FOG W/VIS <= 1/4 MILE 8 HAZE 7 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && DECEMBER STARTED OFF ON A WARM NOTE AT CONCORD AS THE FIRST TWO DAYS OF THE MONTH SAW THE TEMPERATURE TOP 50 DEGREES. SOON THERE WAS A SHIFT TOWARD COOLER WEATHER WITH A MORE ACTIVE WEATHER PATTERN BRINGING A NEW STORM SYSTEM THROUGH THE AREA EVERY FEW DAYS FOR THE REST OF THE MONTH, OFTEN RESULTING IN SNOWFALL. THE FIRST 2 INCHES FELL ON THE 5TH WITH ANOTHER 4 INCHES ON THE 12TH. NOT LONG AFTERWARDS AN ARCTIC AIR MASS BROUGHT VERY COLD EARLY SEASON TEMPERATURES INCLUDING THE FIRST SUBZERO TEMPERATURE OF THE SEASON ON THE 16TH. ANOTHER SNOWSTORM BROUGHT MORE THAN 4 INCHES OF SNOW ON THE 17TH, BUT A BRIEF WARMUP FOLLOWED WHEN THE TEMPERATURE SOARED INTO THE LOW 50S THE NEXT DAY. THE ARCTIC AIR POURED BACK IN AGAIN ON THE 19TH WITH TWO MORE DAYS RECORDING SUBZERO TEMPERATURES. BY THE 21ST THE BRUTAL COLD HAD EASED UP AND TEMPERATURES WERE NEAR OR ABOVE NORMAL FOR THE REST OF THE MONTH, BUT NOT WARM ENOUGH TO PREVENT THE FIRST WHITE CHRISTMAS IN 3 YEARS. AN INTENSIFYING LOW PRESSURE SYSTEM TRACKING NEAR THE AREA ON THE 29TH BROUGHT MORE THAN 8 INCHES OF HEAVY SNOW, MUCH OF THAT OCCURRING IN JUST A FEW HOURS THAT EVENING. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 27.6 DEGREES WHICH WAS 0.8 DEGREES ABOVE NORMAL, MARKING THE 8TH CONSECUTIVE MONTH OF ABOVE NORMAL TEMPERATURES AT CONCORD DATING BACK TO APRIL. ALTHOUGH DECEMBER WAS ABOVE NORMAL, IT WAS MORE THAN 10 DEGREES COLDER THAN LAST DECEMBER WHEN CONCORD EXPERIENCED ITS WARMEST DECEMBER ON RECORD. THE AVERAGE TEMPERATURE IN DECEMBER 2015 WAS 37.7 DEGREES. THE COLDEST DECEMBER WAS IN 1989 WHEN THE AVERAGE TEMPERATURE WAS ONLY 11.9 DEGREES. A TOTAL OF 3.32 INCHES OF PRECIPITATION FELL WHICH WAS 0.12 INCHES ABOVE NORMAL. ALTHOUGH IT WAS ABOVE NORMAL, IT WAS ALSO THE DRIEST DECEMBER SINCE 2001 AS CONCORD HAS SEEN 15 STRAIGHT YEARS WITH ABOVE NORMAL PRECIPITATION IN DECEMBER. THE WETTEST DECEMBER ON RECORD WAS IN 1936 WHEN 7.64 INCHES OF PRECIPITATION WAS RECORDED. THE DRIEST WAS IN 1943 WITH ONLY 0.58 INCHES. THERE WAS A TOTAL OF 23.2 INCHES OF SNOWFALL WHICH WAS 8.7 INCHES ABOVE NORMAL. THERE WERE 3 SNOWSTORMS WHICH DROPPED MORE THAN 4 INCHES OF SNOWFALL ON THE 12TH, 17TH, AND 29TH. THE HEAVIEST WAS ON THE 29TH WHEN 8.3 INCHES WAS MEASURED. THE SNOWIEST DECEMBER ON RECORD WAS 2007 WHEN 45.3 INCHES WAS RECORDED. THERE HAVE BEEN TWO DECEMBERS WHICH RECORDED ONLY A TRACE OF SNOW, 1999 AND 1928. THERE WERE NO DAILY RECORDS SET OR TIED IN DECEMBER 2016. $$ KIMBLE

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