Climatological Report (Seasonal)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
659 CXUS51 KGYX 021642 CLSCON PWMCLMCON 000 TTAA00 KGYX 011736 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 1240 PM EDT WED SEP 2 2020 ................................... ...THE CONCORD NH CLIMATE SUMMARY FOR THE SUMMER SEASON, FROM 6/1/2020 TO 8/31/2020... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1868 TO 2020 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 29 08/31/1965 HIGHEST 96 08/11 95 1 96 07/20 07/27 07/19 LOWEST 33 06/01 37 -4 38 06/04 AVG. MAXIMUM 83.7 80.2 3.5 81.6 AVG. MINIMUM 57.6 55.5 2.1 55.7 MEAN 70.7 67.8 2.9 68.7 DAYS MAX >= 90 24 9.9 14.1 10 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.0 0.0 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 20.49 1897 MINIMUM 2.74 1999 TOTALS 5.92 10.61 -4.69 12.62 DAILY AVG. 0.07 0.12 -0.05 0.14 DAYS >= .01 31 33.4 -2.4 29 DAYS >= .10 13 20.2 -7.2 19 DAYS >= .50 5 7.0 -2.0 11 DAYS >= 1.00 1 2.6 -1.6 5 GREATEST 24 HR. TOTAL 1.31 06/28 SNOWFALL (INCHES) RECORDS TOTAL 0.0 TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 0.0 0.0 0.0 0.0 SNOWDEPTH AVG. 0 DAYS >= TRACE 0 0.0 0.0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 24 HR TOTAL 0.0 DEGREE_DAYS HEATING TOTAL 84 133 -49 91 SINCE 7/1 29 48 -19 20 COOLING TOTAL 634 395 239 450 SINCE 1/1 676 413 263 464 ................................................................. WIND (MPH) AVERAGE WIND SPEED 5.0 HIGHEST WIND SPEED/DIRECTION 38/320 DATE 06/06 HIGHEST GUST SPEED/DIRECTION 52/310 DATE 06/06 SKY COVER AVERAGE SKY COVER 0.40 AVERAGE RH (PERCENT) 68 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && THE SUMMER MONTHS AT CONCORD WERE CHARACTERIZED BY VERY WARM AND HUMID CONDITIONS AND BELOW NORMAL PRECIPITATION. HOWEVER, THAT IS NOT HOW SUMMER BEGAN AS THE LOW TEMPERATURE ON JUNE 1 WAS 33 DEGREES, THE COLDEST TEMPERATURE OBSERVED AT CONCORD IN THE MONTH OF JUNE SINCE 1969. WARMER AND MORE HUMID CONDITIONS ARRIVED TOWARD THE MIDDLE OF JUNE AND PERSISTED, INCLUDING 5 OUT OF 6 DAYS ABOVE 90 DEGREES FROM THE 18TH THROUGH THE 23RD. A PROLONGED STRETCH OF DRY WEATHER BEGAN IN MID-MAY AND EXTENDED UNTIL THE LAST THREE DAYS OF JUNE WHEN MORE THEN 2 INCHES OF RAIN FELL, THE FIRST SIGNIFICANT PRECIPITATION AT CONCORD IN MORE THAN 40 DAYS. MORE FREQUENT RAINFALL WAS OBSERVED FOR THE FIRST PART OF JULY TO HELP EASE THE ONGOING DROUGHT BEFORE DRIER CONDITIONS RETURNED FOR THE LATTER HALF OF THE MONTH. OTHER THAN A BRIEF RESPITE MID-MONTH, JULY WAS WARM TO HOT AND HUMID WITH BOTH 3 STRAIGHT DAYS (JULY 18-20) AND 4 STRAIGHT DAYS (JULY 26-29) OF TEMPERATURES ABOVE 90 DEGREES. OVERALL, JULY WAS THE 3RD WARMEST MONTH ON RECORD AT CONCORD. THE WARM AND HUMID CONDITIONS CONTINUED THROUGH THE FIRST HALF OF AUGUST, INCLUDING ANOTHER STRETCH OF 5 OUT OF 6 DAYS ABOVE 90 DEGREES (AUGUST 9-14). A SERIES OF COLD FRONTS FINALLY BROUGHT COOLER AND LESS HUMID CONDITIONS FOR THE LATTER HALF OF AUGUST. HOWEVER, THE ONGOING DROUGHT CONDITIONS PERSISTED AS CONCORD SAW ITS DRIEST AUGUST SINCE 2001. THE AVERAGE TEMPERATURE FOR THE SUMMER WAS 70.7 DEGREES WHICH WAS 2.9 DEGREES ABOVE NORMAL AND THE 4TH WARMEST SUMMER ON RECORD. THE WARMEST SUMMER WAS IN 1872 WHEN THE AVERAGE TEMPERATURE WAS 72.3 DEGREES. THE COOLEST WAS 62.6 DEGREES IN 1903. THE FOLLOWING TABLE LISTS THE WARMEST SUMMERS ON RECORD AT CONCORD. WARMEST AVERAGE TEMPERATURE FOR SUMMER (SINCE 1868)... RANK AVE YEAR 1 72.3 1872 2 72.1 1876 3 71.7 1870 4 70.7 2020 <=== 5 70.5 2016 6 70.4 1877 7 70.2 2018 8 70.1 1949 9 70.0 2005 70.0 1938 ALTHOUGH THE HOTTEST TEMPERATURE WAS 96, THERE WERE A TOTAL OF 24 DAYS THAT REACHED 90 OR HIGHER. THE WARMTH WAS ALSO NOTICEABLE IN NIGHTTIME LOWS AS THE TEMPERATURE DID NOT COOL AS MUCH IN THE HUMID CONDITIONS. THE FOLLOWING TABLE LISTS THE NUMBER OF 90 DEGREE DAYS AND 60 DEGREE LOWS IN SUMMER. SUMMER TEMPERATURES (SINCE 1868)... HIGH 90+ LOW 60+ RANK DAYS YEAR | DAYS YEAR 1 29 1955 | 65 1877 2 26 1870 | 62 1876 3 25 1988 | 62 1872 4 25 1966 | 47 1973 5 24 2020 <=== | 44 1887 6 24 1949 | 43 2018 7 22 2016 | 42 2020 <=== 8 22 1978 | 42 1994 9 21 2010 | 42 1988 10 21 2002 | 42 1939 A TOTAL OF 5.92 INCHES OF RAIN FELL WHICH WAS 4.69 INCHES BELOW NORMAL AND THE DRIEST SUMMER SINCE 2016. THE HEAVIEST RAIN FELL AT THE END OF JUNE WHEN FREQUENT SHOWERS AND THUNDERSTORMS DROPPED 2.14 INCHES OF RAIN FROM JUNE 28 THROUGH JUNE 30. THE DRIEST SUMMER WAS IN 1913 WHEN ONLY 3.65 INCHES OF RAIN FELL. THE WETTEST WAS IN 1897 WITH 20.49 INCHES. THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN SUMMER 2020... DATE RECORD PREVIOUS JUN 23 94 - WARMEST HIGH TEMPERATURE 94 IN 1975, 1888 (TIED) JUL 11 72 - WARMEST LOW TEMPERATURE 72 IN 1911 & OTHERS (TIED) $$ KIMBLE/WATSON