Climatological Report (Annual)
Issued by NWS
Issued by NWS
000 CXUS51 KGYX 060429 CLAMHT PWMCLAMHT 000 TTAA00 GYX 030203 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 1128 PM EST TUE JAN 05 2021 ................................... ...THE MANCHESTER CLIMATE SUMMARY FOR THE YEAR OF 2020... CLIMATE NORMAL PERIOD: 1981 TO 2010 CLIMATE RECORD PERIOD: 1885 TO 2021 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 103 07/22/2011 LOW -20 02/13/1967 HIGHEST 98 07/19 97 1 97 07/20 LOWEST -7 02/15 -5 -2 0 02/02 01/31 01/21 AVG. MAXIMUM 62.1 58.7 3.4 59.2 AVG. MINIMUM 42.9 39.7 3.2 40.6 MEAN 52.5 49.2 3.3 49.9 DAYS MAX >= 90 33 10.9 22.1 13 DAYS MAX <= 32 18 34.8 -16.8 35 DAYS MIN <= 32 113 130.1 -17.1 132 DAYS MIN <= 0 1 3.0 -2.0 3 PRECIPITATION (INCHES) TOTALS 33.62 44.58 -10.96 33.81 DAILY AVG. 0.09 0.12 -0.03 0.09 DAYS >= .01 105 131.1 -26.1 129 DAYS >= .10 66 78.2 -12.2 75 DAYS >= .50 22 28.4 -6.4 22 DAYS >= 1.00 8 9.5 -1.5 4 GREATEST 24 HR. TOTAL 2.09 12/05 SNOWFALL (INCHES) TOTALS 39.2 63.1 SINCE 7/1 18.7 29.7 DAYS >= TRACE 37 51 DAYS >= 1.0 10 16 GREATEST SNOW DEPTH 10 12/18 24 HR TOTAL 10.1 12/17 DEGREE DAYS HEATING TOTAL 5551 6394 -843 6227 SINCE 7/1 2027 2369 -342 2309 COOLING TOTAL 1085 641 444 844 ................................................................ WIND (MPH) AVERAGE WIND SPEED 6.7 HIGHEST WIND SPEED/DIRECTION 41/020 DATE 07/02 HIGHEST GUST SPEED/DIRECTION 55/350 DATE 07/02 SKY COVER AVERAGE SKY COVER 0.61 AVERAGE RH (PERCENT) 62 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 18 HEAVY RAIN 20 RAIN 40 LIGHT RAIN 132 FREEZING RAIN 0 LT FREEZING RAIN 2 HEAVY SNOW 5 SNOW 17 LIGHT SNOW 33 FOG 134 FOG W/VIS <= 1/4 MILE 26 HAZE 36 - 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 GRADUALLY DIMINISHING SNOW COVER LEFT OVER FROM A SNOWSTORM JUST BEFORE THE START OF THE YEAR. A BIG WARM UP CAME WHEN THE TEMPERATURE WARMED TO 66 ON JANUARY 11 AND 69 ON JANUARY 12. ALTHOUGH THAT JANUARY THAW WAS ENOUGH TO MELT THE LAST OF THE SNOW ON THE GROUND, MORE SNOW WAS ON THE WAY A FEW DAYS LATER. AFTER A FEW DAYS OF SNOW AND SOME COLDER TEMPERATURES, THE MILD WEATHER RETURNED. WARMER TEMPERATURES AND RAIN WASHED THE SNOW AWAY AGAIN ON JANUARY 25. ANOTHER STRETCH OF WINTRY WEATHER BROUGHT SNOW AND FREEZING RAIN ON FEBRUARY 6 AND 7 AND THEN AGAIN ON FEBRUARY 13. THE COLDEST AIR OF THE YEAR MOVED IN BEHIND THIS STORM WITH MANCHESTER BOTTOMING OUT AT 7 BELOW ZERO ON FEBRUARY 15. IT DIDN`T LAST LONG, THOUGH, AS THE TEMPERATURE WARMED INTO THE 40S AGAIN THE VERY NEXT DAY. THE MILD WEATHER CONTINUED WITH THE TEMPERATURE REACHING 60 AGAIN LATER IN FEBRUARY AND IN EARLY MARCH. THE WARMEST CONDITIONS WERE ON MARCH 9 WHEN THE TEMPERATURE SOARED TO 74 DEGREES. A SNOWSTORM DROPPED 6 INCHES OF SNOW ON MARCH 23, BUT MILD TEMPERATURES ENSURED THAT THIS SNOW BARELY LASTED A DAY ON THE GROUND BEFORE MELTING AWAY. MORE FREQUENT STORMY WEATHER WAS OBSERVED IN THE FIRST PART OF SPRING. A NEW STORM SYSTEM BROUGHT RAIN OR EVEN WINTRY WEATHER JUST ABOUT EVERY WEEK. AN INCH OF RAIN FELL MARCH 29 AND AGAIN ON APRIL 2 AND 3. THE NEXT STORM BROUGHT RAIN CHANGING TO SNOW ON APRIL 9 AND 10 WITH ANOTHER INCH OF LIQUID EQUIVALENT PRECIPITATION RECORDED. THIS BEGAN A SHIFT TOWARD COOLER CONDITIONS WHICH LASTED FOR SEVERAL WEEKS WHILE THE FREQUENT STORMINESS CONTINUED. ALTHOUGH THERE WERE A FEW MILD DAYS, MOST DAYS WERE COOL WITH SHOWERS AND EVEN SNOWFLAKES CONTINUING LATE INTO THE SPRING. SNOW WAS EVEN OBSERVED ON MAY 9, ALTHOUGH IT NEVER ACCUMULATED TO A MEASURABLE DEPTH IN THE CITY. SUDDENLY IN MID MAY THE FREQUENT STORMY WEATHER CAME TO AN ABRUPT END AND PRECIPITATION SHUT OFF. THE PERSISTENT TROUGH WHICH HAD BROUGHT THE COOL AND STORMY WEATHER SHIFTED TO THE EAST. INSTEAD, FREQUENT COOL, DRY AIR MASSES SPILLED DOWN OUT OF CANADA. THE LAST SIGNIFICANT RAINFALL WAS ON MAY 15 WHEN A THIRD OF AN INCH WAS RECORDED. VERY LITTLE RAIN FELL FOR MORE THAN A MONTH CAUSING THE RAPID ONSET OF DROUGHT CONDITIONS. TEMPERATURES DURING THIS PERIOD WERE FREQUENTLY WARM DURING THE DAY AND OCCASIONALLY COOL AT NIGHT DUE TO THE DRY AIR MASSES. WHILE THERE WERE A FEW HOT DAYS IN LATE MAY INCLUDING 92 ON MAY 27, THE TEMPERATURE FELL ALL THE WAY TO 42 ON JUNE 1. AFTER REACHING 90 AGAIN ON MAY 6, THUNDERSTORMS DROPPED NEARLY HALF AN INCH OF RAIN, THE ONLY SIGNIFICANT RAIN IN THIS OTHERWISE EXCEPTIONALLY DRY PERIOD. THE FIRST CONSISTENTLY HOT WEATHER ARRIVED IN MID JUNE WHEN MANCHESTER SAW THE TEMPERATURE REACH THE UPPER 80S AND LOW 90S MOST DAYS. THE TEMPERATURE TOPPED 90 FOR 4 STRAIGHT DAYS FROM JUNE 18 THROUGH 21, PEAKING AT 95 ON JUNE 21. A SLOW MOVING LOW PRESSURE SYSTEM BROUGHT MORE FREQUENT SHOWERS AND THUNDERSTORMS AT THE END OF JUNE, BRINGING SOME DROUGHT RELIEF TO THE REGION. HOWEVER, MANCHESTER MISSED OUT ON THE HEAVIER RAINFALL AND ONLY RECORDED A LITTLE MORE THAN HALF AN INCH FROM JUNE 27 THROUGH 30 WITH DROUGHT CONDITIONS CONTINUING. THERE WERE MORE FREQUENT SHOWERS AND THUNDERSTORMS IN JULY, INCLUDING MORE THAN AN INCH FALLING ON JULY 14. HOWEVER, THE RAINFALL REMAINED BELOW NORMAL THROUGH THE SUMMER. BY MID JULY THE TEMPERATURE AND HUMIDITY BEGAN TO BUILD. MANCHESTER SAW ANOTHER 4 STRAIGHT DAYS IN THE 90S FROM JULY 18 THROUGH 21 INCLUDING A HIGH OF 98 ON JUNE 19. THUNDERSTORMS BROUGHT A BREAK FROM THE HEAT AND SOME MUCH NEEDED RAIN ON JULY 22, BUT THE HEAT AND HUMIDITY RETURNED. MANCHESTER HIT 90 DEGREES AGAIN FOR 8 STRAIGHT DAYS FROM JULY 25 THROUGH AUGUST 1. TROPICAL STORM ISAIAS MOVED THROUGH THE REGION ON AUGUST 4. THIS STORM DIDN`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