Climatological Report (Annual)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
000 CXUS51 KGYX 060327 CLACON PWMCLACON 000 TTAA00 GYX 060102 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 802 PM EST WED JAN 05 2022 ................................... ...THE CONCORD NH CLIMATE SUMMARY FOR THE YEAR OF 2021... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1868 TO 2022 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 102 07/03/1966 07/04/1911 LOW -37 02/16/1943 HIGHEST 97 06/28 96 1 96 07/27 07/19 08/11 LOWEST -3 01/31 -15 12 -8 12/19 02/10 AVG. MAXIMUM 59.9 58.3 1.6 60.4 AVG. MINIMUM 38.3 36.1 2.2 37.2 MEAN 49.1 47.2 1.9 48.8 DAYS MAX >= 90 17 13.7 3.3 25 DAYS MAX <= 32 36 43.5 -7.5 25 DAYS MIN <= 32 148 164.8 -16.8 164 DAYS MIN <= 0 2 12.8 -10.8 5 PRECIPITATION (INCHES) RECORD MAXIMUM 57.99 2008 MINIMUM 24.17 1965 TOTALS 44.02 41.95 2.07 33.28 DAILY AVG. 0.12 0.11 0.01 0.09 DAYS >= .01 138 132.8 5.2 111 DAYS >= .10 84 79.6 4.4 57 DAYS >= .50 30 28.0 2.0 27 DAYS >= 1.00 10 9.5 0.5 6 GREATEST 24 HR. TOTAL 2.66 07/18 TO 07/19 SNOWFALL (INCHES) RECORDS TOTAL 128.4 1956 TOTALS 35.1 67.7 -32.6 59.9 SINCE 7/1 8.1 17.6 -9.5 32.0 SNOWDEPTH AVG. 1 DAYS >= TRACE 52 30.3 21.7 44 DAYS >= 1.0 12 16.5 -4.5 10 GREATEST SNOW DEPTH 13 02/23 24 HR TOTAL 6.9 02/01 TO 02/02 DEGREE DAYS HEATING TOTAL 6322 6980 -658 6528 SINCE 7/1 2246 2610 -364 2442 COOLING TOTAL 658 528 130 726 FREEZE DATES RECORD EARLIEST 08/29/1986 LATEST 06/26/1979 EARLIEST 10/24 LATEST 04/27 ................................................................ WIND (MPH) AVERAGE WIND SPEED 5.8 HIGHEST WIND SPEED/DIRECTION 41/300 DATE 03/02 HIGHEST GUST SPEED/DIRECTION 59/290 DATE 03/02 SKY COVER AVERAGE SKY COVER 0.46 AVERAGE RH (PERCENT) 68 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 18 HEAVY RAIN 31 RAIN 63 LIGHT RAIN 140 FREEZING RAIN 5 LT FREEZING RAIN 7 HEAVY SNOW 1 SNOW 7 LIGHT SNOW 47 FOG 174 FOG W/VIS <= 1/4 MILE 44 HAZE 18 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && THE YEAR BEGAN WITH MILD WEATHER AND A SHALLOW SNOWPACK. MILD WEATHER PERSISTED INTO THE MIDDLE OF JANUARY WITH THE JANUARY THAW ARRIVING ON THE 16TH WHEN THE HIGH REACHED 47 DEGREES AND 1.13 INCHES OF RAIN FELL. COLDER WEATHER ARRIVED THE LAST WEEK OF JANUARY AND PERSISTED THROUGH MUCH OF FEBRUARY. THE COLDEST TEMPERATURE OF THE YEAR WAS 3 DEGREES BELOW ZERO ON JANUARY 31ST AND AGAIN ON FEBRUARY 10TH. THE BIGGEST SNOWFALL OF THE YEAR CAME ON FEBRUARY 1ST AND 2ND WHEN AN AREA OF LOW PRESSURE TRACKED UP THE EAST COAST BRINGING 6.9 INCHES OF SNOW. FREQUENT SNOWS THROUGH FEBRUARY HELPED BUILD THE SNOWPACK UNTIL IT PEAKED AT 13 INCHES ON FEBRUARY 23RD. MILD WEATHER FOLLOWED WITH THE LAST MEASURABLE SNOWFALL OCCURRING ON FEBRUARY 27TH TYING WITH 2010 AS THE EARLIEST LAST MEASURABLE SNOWFALL. MARCH FEATURED LARGE TEMPERATURE SWINGS WITH THE LAST OF THE WINTER SNOWPACK MELTING BY MARCH 20TH. THE FIRST 70 DEGREE DAY OCCURRED ON MARCH 26TH WHEN THE HIGH TEMPERATURE CLIMBED TO 74 DEGREES. MILD WEATHER CONTINUED THROUGH SPRING WITH BOTH APRIL AND MAY HAVING ABOVE NORMAL TEMPERATURES. THE LAST FREEZE OCCURRED ON APRIL 27TH ALMOST TWO WEEKS EARLIER THAN THE NORMAL LAST FREEZE OF MAY 8TH. THE COMBINATION OF ABOVE NORMAL TEMPERATURES AND BELOW NORMAL PRECIPITATION THROUGH THE END OF WINTER INTO SPRING ALONG WITH A SNOWLESS GROUND LED TO LITTLE IN THE WAY OF THE TRADITIONAL MUD SEASON. FOR THE SECOND YEAR IN A ROW THERE WAS A DRY START TO THE GROWING SEASON WITH A RESURGENCE IN DROUGHT CONDITIONS. AFTER A HIGH OF 92 DEGREES ON MAY 26TH, THE WARM DRY SPRING WAS INTERRUPTED BY COLD AND WET WEATHER OVER MEMORIAL DAY WEEKEND. TEMPERATURES REBOUNDED QUICKLY GOING INTO JUNE WITH FOUR STRAIGHT DAYS OF TEMPERATURES IN LOW 90S STARTING JUNE 5TH. THE HEAT BACKED OFF SOME GOING INTO THE MIDDLE OF JUNE, BUT CAME BACK AT THE END OF THE MONTH WITH THE LAST FOUR DAYS CLIMBING INTO THE 90S. THIS HEAT WAVE WOULD MARK THE HOTTEST WEATHER OF THE YEAR WITH HOTTEST DAY IN 2021 BEING JUNE 28TH WITH HIGH OF 97 DEGREES. THIS HOT AND DRY PATTERN LED TO EXPANDING AND INTENSIFYING DROUGHT CONDITIONS. THE HOT AND DRY WEATHER TOOK QUITE A TURN IN THE OTHER DIRECTION GOING INTO JULY. THE FOURTH OF JULY WEEKEND WAS COOL AND RAINY WITH OVER THREE INCHES OF RAIN FALLING BETWEEN JULY 1ST TO JULY 4TH. THE COOL AND RAINY HOLIDAY WEEKEND WAS FOLLOWED BY THE REMNANTS OF TROPICAL STORM ELSA BRINGING 2.26 INCHES OF RAIN OVER JULY 8TH AND 9TH. SEVERAL DAYS LATER ON JULY 17TH TO 18TH A STALLED FRONTAL BOUNDARY AND CONVECTION BROUGHT THE GREATEST 24 HOUR RAINFALL OF THE YEAR WITH 2.66 INCHES. VERY WET AND COOL WEATHER WOULD END UP BEING THE THEME FOR JULY BRINGING AN END TO DROUGHT CONDITIONS. THE WEATHER PATTERN THAT BROUGHT COOL AND WET CONDITIONS IN JULY BROKE DOWN GOING INTO AUGUST. THERE WERE TWO PERIODS OF SUMMER HEAT WITH MULTIPLE DAYS INTO THE UPPER 80S TO 90 DEGREES ALONG WITH RELATIVELY DRY WEATHER THROUGH THE FIRST TWO WEEKS OF AUGUST. THE DRY STRETCH OF WEATHER WAS INTERRUPTED BY THE REMNANTS OF TROPICAL STORM FRED BRINGING OVER AN INCH OF RAIN ON AUGUST 19TH INTO THE 20TH. THE WEATHER TURNED MORE ACTIVE INTO SEPTEMBER WITH THE THEME FOR THE FALL SEASON BEING WARM AND WET CONDITIONS. THE REMNANTS OF HURRICANE IDA BROUGHT NEARLY TWO INCHES OF RAIN ON SEPTEMBER 1ST AND 2ND, CONTINUING THE TREND OF POST TROPICAL SYSTEMS BRINGING HEAVY BOUTS OF RAIN TO THE AREA. MILD AND RELATIVELY DRY WEATHER DOMINATED THE FIRST HALF OF OCTOBER WITH THE FIRST FREEZE OF THE FALL NOT ARRIVING UNTIL OCTOBER 24TH, MAKING THIS THE SECOND LATEST FREEZE ON RECORD. GOING INTO THE END OF OCTOBER THE PATTERN CHANGED FAVORING NOR`EASTERS. A STRONG NOR`EASTER BROUGHT RAIN AND WINDS ON OCTOBER 27TH FOLLOWED BY ANOTHER SYSTEM BRINGING 2.25 INCHES OF RAINFALL OVER HALLOWEEN WEEKEND. MILD CONDITIONS CONTINUED INTO NOVEMBER WITH THE TEMPERATURES CLIMBING TO 60 DEGREES OR GREATER SEVERAL TIMES DURING THE FIRST HALF OF THE MONTH AND A HIGH OF 70 DEGREES ON NOVEMBER 18TH. COOLER WEATHER FINALLY ARRIVED AROUND THANKSGIVING ALONG WITH THE FIRST MEASURABLE SNOWFALL OF 0.4 INCHES ON NOVEMBER 26TH. THE FIRST SIGNIFICANT SNOW OF THE SEASON WAS ON DECEMBER 18TH AND 19TH WHEN 4.2 INCHES FELL. THIS SNOW STUCK AROUND THROUGH CHRISTMAS WITH A WINTRY MIX ON CHRISTMAS DAY ENDING AS SNOW FOLLOWED BY MILD WEATHER THROUGH NEW YEAR`S EVE. THE AVERAGE TEMPERATURE FOR THE YEAR WAS 49.1 DEGREES, WHICH WAS 1.9 DEGREES ABOVE NORMAL AND TIES FOR THE THIRD WARMEST YEAR ON RECORD. THE WARMEST YEAR WAS 49.3 DEGREES IN 2016. THE COLDEST WAS 1918 AT 41.1 DEGREES. THE FOLLOWING TABLE LISTS THE AVERAGE TEMPERATURES FOR EACH MONTH OF 2021 INCLUDING DEPARTURES FROM NORMAL. AVERAGE TEMPERATURES BY MONTH IN 2021 MONTH MAXIMUM MINIMUM AVERAGE NOTES JANUARY 34.4 (+3.6) 18.3 (+7.9) 26.3 (+5.7) FEBRUARY 32.5 (-2.4) 14.4 (+0.6) 23.4 (-0.9) MARCH 48.9 (+5.1) 24.4 (+1.9) 36.6 (+3.5) APRIL 58.9 (+1.5) 34.0 (+1.3) 46.5 (+1.4) MAY 70.5 (+1.2) 44.3 (+0.2) 57.4 (+0.7) JUNE 82.7 (+4.9) 56.3 (+2.6) 69.5 (+3.7) 3RD WARMEST JULY 78.1 (-4.9) 59.7 (+0.5) 68.9 (-2.2) AUGUST 83.2 (+1.5) 62.0 (+4.8) 72.6 (+3.1) 5TH WARMEST SEPTEMBER 74.5 (+0.8) 51.9 (+2.9) 63.2 (+1.8) OCTOBER 64.8 (+3.9) 44.7 (+6.9) 54.8 (+5.5) 6TH WARMEST NOVEMBER 49.9 (+1.5) 26.8 (-1.9) 38.3 (-0.3) DECEMBER 39.9 (+2.8) 23.0 (+3.5) 31.5 (+3.2) ANNUAL 59.9 (+1.6) 38.3 (+2.2) 49.1 (+1.9) 3RD WARMEST THE AVERAGE ANNUAL TEMPERATURE OF 49.1 DEGREES WAS THE 3RD WARMEST YEAR ON RECORD FOR CONCORD. THE FOLLOWING TABLE LISTS THE WARMEST AVERAGE ANNUAL TEMPERATURES AT CONCORD. WARMEST ANNUAL AVERAGE TEMPERATURE (SINCE 1868)... RANK AVE YEAR 1 49.3 2016 2 49.2 1878 3 49.1 2021 <=== 49.1 2012 49.1 1877 6 48.8 2020 48.8 1880 8 48.7 2010 48.7 1998 10 48.6 1870 *NOTE THAT THE NWS BEGAN USING NEW 30-YEAR NORMAL VALUES IN MAY OF 2021. THE DEPARTURE FROM NORMAL LISTED HERE IS THE DEPARTURE FROM THE NORMAL USED AT THE TIME. JANUARY THROUGH APRIL USES THE OLD NORMAL VALUES, WHILE THE REMAINDER OF THE YEAR AND THE ANNUAL VALUES ARE REPORTED RELATIVE TO THE NEW 1991-2020 NORMALS. THE GROWING SEASON, AS DEFINED AS THE LONGEST CONSECUTIVE DAYS ABOVE FREEZING, LASTED FOR 180 DAYS IN 2021 FROM APRIL 27 THROUGH OCTOBER 24. THIS IS 34 DAYS LONGER THAN THE NORMAL OF 146 DAYS AND THE LONGEST GROWING SEASON ON RECORD. THE PREVIOUS LONGEST GROWING SEASON WAS 172 DAYS IN 2018. THE SHORTEST WAS ONLY 86 DAYS IN 1979. A TOTAL OF 44.02 INCHES OF PRECIPITATION FELL WHICH WAS 2.07 INCHES ABOVE NORMAL. THE HEAVIEST PRECIPITATION FELL JULY 18TH AND 19TH WHEN A STALLED FRONTAL BOUNDARY AND CONVECTION BROUGHT 2.66 INCHES OF RAIN. JULY 2021 WOULD END UP BEING THE WETTEST JULY ON RECORD WITH 13.04 INCHES OF RAIN COMING PRIMARILY FROM REMNANT TROPICAL SYSTEMS AND SUMMER CONVECTION. THE DRIEST YEAR ON RECORD WAS IN 1965 WHEN ONLY 24.17 INCHES OF PRECIPITATION WAS RECORDED. THE WETTEST WAS IN 2008 WITH 57.97 INCHES. THE FOLLOWING TABLE LISTS THE PRECIPITATION AND SNOWFALL AMOUNTS FOR EACH MONTH OF 2020 INCLUDING DEPARTURES FROM NORMAL. MONTHLY PRECIPITATION AND SNOWFALL TOTALS FOR 2021 MONTH PRECIPITATION SNOWFALL NOTES JANUARY 1.89 (-0.81) 4.7 (-13.4) 8TH LEAST SNOWY FEBRUARY 2.72 (+0.10) 22.3 (+10.0) MARCH 1.45 (-1.82) T (-11.1) 2ND LEAST SNOWY APRIL 2.86 (-0.55) T (-2.8) MAY 2.99 (-0.48) 0 JUNE 1.29 (-2.48) 0 JULY 13.04 (+9.42) 0 WETTEST AUGUST 3.36 (-0.27) 0 SEPTEMBER 4.46 (+0.83) 0 OCTOBER 4.17 (-0.26) 0 (-0.8) NOVEMBER 1.80 (-1.64) 0.4 (-2.1) DECEMBER 3.99 (+0.29) 7.7 (-6.6) ANNUAL 44.02 (+2.07) 35.1 (-32.6) *NOTE THAT THE NWS BEGAN USING NEW 30-YEAR NORMAL VALUES IN MAY OF 2021. THE DEPARTURE FROM NORMAL LISTED HERE IS THE DEPARTURE FROM THE NORMAL USED AT THE TIME. JANUARY THROUGH APRIL USES THE OLD NORMAL VALUES, WHILE THE REMAINDER OF THE YEAR AND THE ANNUAL VALUES ARE REPORTED RELATIVE TO THE NEW 1991-2020 NORMALS. DAYS WITH AT LEAST 1.00 INCH OF PRECIPITATION IN 2021 DAY PRECIPITATION JANUARY 16 1.13 JULY 2 1.57 JULY 9 1.67 JULY 12 1.19 JULY 18 1.84 JULY 29 1.78 SEPTEMBER 2 1.09 OCTOBER 30 1.11 OCTOBER 31 1.14 DECEMBER 11 1.00 DAYS WITH AT LEAST 6 INCHES OF SNOWFALL IN 2021 DAYS SNOWFALL NONE THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN 2021... DATE RECORD PREVIOUS JAN 16 1.13 - GREATEST PRECIPITATION 0.97 IN 1885 MAR 11 68 - WARMEST HIGH TEMPERATURE 65 IN 1977, 1871 MAR 25 46 - WARMEST LOW TEMPERATURE 46 IN 1979 (TIED) MAR 26 74 - WARMEST HIGH TEMPERATURE 74 IN 1949, 1945 (TIED) MAR 26 46 - WARMEST LOW TEMPERATURE 46 IN 1953 (TIED) JUN 8 69 - WARMEST LOW TEMPERATURE 67 IN 1871 JUN 29 74 - WARMEST LOW TEMPERATURE 72 IN 1880 JUL 3 59 - COOLEST HIGH TEMPERATURE 61 IN 1914 JUL 18 1.84 - GREATEST PRECIPITATION 1.45 IN 1949 AUG 12 72 - WARMEST LOW TEMPERATURE 72 IN 1891, 1872 (TIED) AUG 23 69 - WARMEST LOW TEMPERATURE 69 IN 2009, 1879 (TIED) AUG 24 68 - WARMEST LOW TEMPERATURE 68 IN 2015 (TIED) SEP 23 67 - WARMEST LOW TEMPERATURE 67 IN 1970 AND 1909 (TIED) $$ SCHROETER