Climatological Report (Seasonal)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
000 CXUS51 KGYX 030151 CLSCON PWMCLSCON 000 TTAA00 GYX 011907 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 850 PM EST THU DEC 02 2021 ................................... ...THE CONCORD NH CLIMATE SUMMARY FOR THE FALL SEASON, FROM 9/1/2021 TO 11/30/2021... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1868 TO 2021 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 98 09/02/1953 LOW -17 11/30/1875 HIGHEST 84 09/08 88 -4 86 09/08 09/15 LOWEST 15 11/30 11 4 13 11/19 11/18 AVG. MAXIMUM 63.1 61.0 2.1 63.2 AVG. MINIMUM 41.1 38.5 2.6 38.1 MEAN 52.1 49.8 2.3 50.6 DAYS MAX >= 90 0 0.9 -0.9 0 DAYS MAX <= 32 0 1.5 -1.5 1 DAYS MIN <= 32 25 33.5 -8.5 33 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 22.08 2005 MINIMUM 2.88 1908 TOTALS 10.43 11.50 -1.07 9.32 DAILY AVG. 0.11 0.13 -0.02 0.10 DAYS >= .01 32 30.7 1.3 26 DAYS >= .10 20 19.1 0.9 14 DAYS >= .50 8 7.5 0.5 8 DAYS >= 1.00 3 3.0 0.0 2 GREATEST 24 HR. TOTAL 2.21 10/30 TO 10/31 SNOWFALL (INCHES) RECORDS TOTAL 25.7 2011 TOTALS 0.4 3.3 -2.9 0.8 SINCE 7/1 0.4 3.3 -2.9 MM SNOWDEPTH AVG. T DAYS >= TRACE 3 1.8 1.2 4 DAYS >= 1.0 0 1.0 -1.0 0 GREATEST SNOW DEPTH T 11/27 24 HR TOTAL 0.4 11/26 DEGREE DAYS HEATING TOTAL 1190 1441 -251 1337 SINCE 7/1 1214 1473 -259 MM COOLING TOTAL 42 53 -11 50 SINCE 1/1 658 528 130 726 ................................................................ WIND (MPH) AVERAGE WIND SPEED 4.8 HIGHEST WIND SPEED/DIRECTION 30/280 DATE 09/15 HIGHEST GUST SPEED/DIRECTION 40/280 DATE 09/15 SKY COVER AVERAGE SKY COVER 0.50 AVERAGE RH (PERCENT) 72 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 3 HEAVY RAIN 6 RAIN 16 LIGHT RAIN 40 FREEZING RAIN 0 LT FREEZING RAIN 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 2 FOG 49 FOG W/VIS <= 1/4 MILE 16 HAZE 2 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && UNSETTLED AND COOL CONDITIONS DOMINATED THE FIRST PART OF SEPTEMBER WITH THE REMNANTS OF HURRICANE IDA BRINGING HEAVY RAIN ON THE 1ST AND 2ND. TEMPERATURES THEN TRENDED ABOVE NORMAL THROUGH THE MIDDLE TO LATTER PART OF THE MONTH AS WARMER AND HUMID AIRMASSES CROSSED THE AREA WITH A COOL DOWN TO CLOSE OUT THE MONTH. AFTER 1.77 INCHES OF RAIN FROM THE REMNANTS OF IDA THE REST OF SEPTEMBER WAS CHARACTERIZED BY FREQUENT BOUTS OF LIGHT TO MODERATE RAIN. OCTOBER ON THE WHOLE WAS WARM AND RELATIVELY DRY FOR MUCH OF THE MONTH. THE CONCORD AREA EXPERIENCED MULTIPLE WARM SPELLS THROUGHOUT OCTOBER WHERE THE HIGH TEMPERATURE ROSE ABOVE 70 DEGREES WITH THE LONGEST STRETCH OF 70 DEGREES OR HIGHER OCCURRING FROM THE 11TH TO THE 16TH. PRECIPITATION EVENTS WERE RELATIVELY SPARSE THROUGH THE FIRST HALF OF THE MONTH WITH A GENERAL SHIFT TO AN ACTIVE PATTERN THE SECOND HALF OF THE MONTH. OCTOBER RAINFALL WOULD HAVE ENDED UP WELL BELOW NORMAL IF NOT FOR AN AREA OF LOW PRESSURE BRINGING MODERATE TO HEAVY RAIN ON THE 30TH INTO THE 31ST. THIS SYSTEM BROUGHT THE GREATEST RAINFALL DURING THE FALL WITH A TOTAL OF 2.25 INCHES RECORDED. IN ADDITION TO SEVERAL DAYS WARMING INTO THE 70S, OVERNIGHT LOWS WERE ALSO ABOVE NORMAL WITH CONCORD RECORDING ITS SECOND LATEST FREEZE ON RECORD WHEN THE TEMPERATURES DROPPED TO 27 DEGREES ON THE 24TH. THIS WAS ONE DAY SHORT OF THE LATEST FREEZE ON RECORD, WHICH WAS OCTOBER 25, 1921 WHEN THE TEMPERATURE DROPPED TO 30 DEGREES. AFTER A STORMY END TO OCTOBER THE WEATHER PATTERN OVER NEW ENGLAND TURNED QUIET THROUGH THE FIRST PART OF NOVEMBER. PERSISTENT HIGH PRESSURE KEPT THE CONCORD AREA PRECIPITATION FREE THROUGH THE FIRST WEEK AND A HALF WITH SOME MILD SUNNY DAYS AND COLD CLEAR NIGHTS. TOWARDS THE END OF THE SECOND WEEK OF NOVEMBER THE PATTERN TURNED MORE ACTIVE AS A BROAD AREA OF LOW PRESSURE TRACKED FROM THE GREAT LAKES THROUGH THE NORTHEAST. THE PATTERN REMAINED RELATIVELY ACTIVE THROUGH THE END OF THE MONTH WITH FRONTAL PASSAGES BRINGING SEVERAL TEMPERATURE SWINGS. AFTER A MILD THANKSGIVING, A COLD FRONT CROSSED THE AREA WITH LOW PRESSURE DEVELOPING IN THE GULF OF MAINE LEADING TO THE FIRST MEASURABLE SNOWFALL OF 0.4 INCHES ON THE 26TH. THE AVERAGE TEMPERATURE WAS 52.1 DEGREES, WHICH WAS 2.3 DEGREES ABOVE NORMAL AND TIES WITH 2016 AND 1879 FOR THE SEVENTH WARMEST FALL ON RECORD. THE WARMEST FALL ON RECORD WAS 53.5 DEGREES IN 2017. THE COOLEST WAS 43.7 DEGREES IN 1972. THE FOLLOWING TABLE LISTS THE WARMEST FALLS ON RECORD AT CONCORD. WARMEST AVERAGE TEMPERATURE IN FALL (SINCE 1868)... RANK AVE YEAR 1 53.5 2017 2 53.0 1961 3 52.6 1881 4 52.3 1931 52.3 1878 52.3 1877 7 52.1 2021 <=== 52.1 2016 52.1 1879 10 51.9 2011 AND 1882 THE FIRST FREEZE OF THIS FALL OCCURRED ON OCTOBER 24TH WHEN THE LOW TEMPERATURE DROPPED TO 27 DEGREES. THIS OCCURRED 21 DAYS LATER THAN THE NORMAL FIRST FREEZE OF OCTOBER 3RD AND MAKES THIS THE 2ND LATEST FREEZE ON RECORD. THE FOLLOWING TABLE LISTS THE LATEST FALL FREEZES ON RECORD. LATEST FIRST FALL FREEZE (SINCE 1868)... RANK DATE YEAR 1 OCT 25 1921 2 OCT 24 2021 <=== 3 OCT 22 1882 4 OCT 20 2005 5 OCT 19 1869 6 OCT 18 1909 7 OCT 17 1893 8 OCT 16 1961 9 OCT 15 1939 10 OCT 14 2007 AND 1933 A TOTAL OF 10.43 INCHES OF PRECIPITATION FELL, WHICH WAS 1.07 INCHES BELOW NORMAL. THE HEAVIEST RAIN FELL ON OCTOBER 30-31 WHEN A TOTAL OF 2.25 INCHES WAS RECORDED. THE DRIEST FALL WAS IN 1908 WHEN ONLY 2.88 INCHES WAS RECORDED. THE WETTEST WAS IN 2005 WITH 22.08 INCHES. ONLY 0.4 INCHES OF SNOW FELL, WHICH WAS 2.9 INCHES BELOW NORMAL. ALL OF THIS SNOW FELL ON NOVEMBER 26. SNOW IN FALL IS OFTEN HIT OR MISS. IN 154 YEARS OF RECORDS THERE HAVE BEEN 3 YEARS WITH NO SNOW IN FALL, MOST RECENTLY IN 2015. THERE HAVE BEEN AN ADDITIONAL 29 YEARS WHICH RECORDED ONLY A TRACE OF SNOWFALL, MOST RECENTLY IN 2010. THE SNOWIEST FALL WAS IN 2011 WHEN 25.7 INCHES FELL. THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN FALL 2021... DATE RECORD PREVIOUS SEP 23 67 - WARMEST LOW TEMPERATURE 67 IN 1970 AND 1909 (TIED) $$ SCHROETER