Climatological Report (Monthly)
Issued by NWS Portland, ME

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000 CXUS51 KGYX 031124 CLMPWM PWMCLMPWM 000 TTAA00 KGYX 020306 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 714 AM EDT WED SEP 3 2014 ................................... ...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2014... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1941 TO 2014 /FOR TEMPERATURES/ CLIMATE RECORD PERIOD 1871 TO 2014 /FOR PRECIPITATION/ CLIMATE RECORD PERIOD 1882 TO 2014 /FOR SNOWFALL/ WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 103 08/02/1975 LOW 33 08/31/1965 HIGHEST 88 08/27 90 -2 89 08/22 LOWEST 49 08/19 47 2 49 08/06 AVG. MAXIMUM 76.4 77.7 -1.3 78.1 AVG. MINIMUM 57.1 58.2 -1.1 57.3 MEAN 66.7 68.0 -1.3 67.7 DAYS MAX >= 90 0 1.1 -1.1 0 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 15.22 1991 MINIMUM 0.27 1947 TOTALS 8.56 3.14 5.42 1.74 DAILY AVG. 0.28 0.10 0.18 0.06 DAYS >= .01 9 9.3 -0.3 7 DAYS >= .10 5 5.1 -0.1 4 DAYS >= .50 3 1.6 1.4 2 DAYS >= 1.00 2 0.7 1.3 0 GREATEST 24 HR. TOTAL 6.44 08/13 TO 08/14 SNOWFALL (INCHES) RECORDS TOTAL 0.0 TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 0.0 0.0 0.0 SNOWDEPTH AVG. 0 DAYS >= TRACE 0 0.0 0.0 DAYS >= 1.0 0 0.0 0.0 GREATEST SNOW DEPTH 0 24 HR TOTAL 0.0 STORM TOTAL 0.0 DEGREE_DAYS HEATING TOTAL 24 28 -4 11 SINCE 7/1 24 45 -21 18 COOLING TOTAL 83 120 -37 102 SINCE 1/1 298 328 -30 417 ................................................................. WIND (MPH) AVERAGE WIND SPEED 6.0 HIGHEST WIND SPEED/DIRECTION 28/070 DATE 08/13 HIGHEST GUST SPEED/DIRECTION 39/060 DATE 08/13 SKY COVER AVERAGE SKY COVER 0.50 AVERAGE RH (PERCENT) 74 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 HEAVY RAIN 4 RAIN 3 LIGHT RAIN 13 FREEZING RAIN 0 LT FREEZING RAIN 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 FOG 16 FOG W/VIS <= 1/4 MILE 2 HAZE 4 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && AFTER A THREE MONTH STRETCH OF ABOVE NORMAL TEMPERATURES PORTLAND REVERTED BACK TO BELOW NORMAL IN AUGUST. THIS WAS THE 9TH BELOW NORMAL MONTH IN THE LAST 13 MONTHS DATING BACK TO AUGUST OF 2013. MOST OF THE MONTH SAW COOLER THAN NORMAL WEATHER WITH THE TEMPERATURE NOT RISING ABOVE 81 DEGREES FOR THE FIRST 3 WEEKS OF THE MONTH. IT WASN`T UNTIL THE FINAL WEEK OF THE MONTH THAT WARM WEATHER FINALLY ARRIVED. THE WARMEST TEMPERATURE OF THE YEAR SO FAR OCCURRED ON AUGUST 27 WHEN THE TEMPERATURE ROSE TO 88 DEGREES. THE BIGGEST WEATHER STORY OF THE MONTH WAS NO DOUBT THE RECORD RAINFALL ON THE EVENING OF AUGUST 13. MORE THAN 6 INCHES OF RAIN FELL IN A SPAN OF JUST A FEW HOURS LEADING TO SIGNIFICANT FLASH FLOODING IN THE CITY. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 66.7 DEGREES WHICH WAS 1.3 DEGREES BELOW NORMAL. THIS WAS THE COOLEST AUGUST SINCE 2008 AND THE SECOND COOLEST SINCE 1994. THE WARMEST AUGUST ON RECORD WAS 1969 WITH AN AVERAGE TEMPERATURE OF 71.3 DEGREES. THE COOLEST WAS 1964 WITH AN AVERAGE OF ONLY 61.1 DEGREES. THE WARMEST TEMPERATURE OF THE MONTH WAS 88 DEGREES ON THE 27TH. THIS WAS ALSO THE WARMEST DAY OF THE YEAR SO FAR. IF PORTLAND DOES NOT REACH 90 DEGREES THIS YEAR IT WILL BE THE FIRST TIME THIS HAS HAPPENED SINCE 2008. NORMALLY PORTLAND SEES 4.6 DAYS PER YEAR AT 90 OR ABOVE. ONLY 6 TIMES HAS PORTLAND FAILED TO REACH 90 DEGREES IN A YEAR. THIS IS ROUGHLY 8 PERCENT OF ALL YEARS IN THE PREVIOUS 73 YEARS OF TEMPERATURE RECORDS AT PORTLAND. BELOW IS A LIST OF THE COOLEST YEARLY MAXIMUM TEMPERATURES AT PORTLAND. COOLEST YEARLY MAXIMUM TEMPERATURES RANK TEMP YEAR 1 86 1996 2 87 1972 3 88 2014 <=== 88 2008 88 1986 88 1974 88 1962 7 90 2000 90 1992 A TOTAL OF 8.56 INCHES OF RAIN FELL IN AUGUST. THIS WAS MORE THAN TWICE THE NORMAL RAINFALL AND 5.42 INCHES ABOVE NORMAL. THIS WAS THE SECOND WETTEST AUGUST ON RECORD. MOST OF THE RAIN DURING THE MONTH FELL ON THE 13TH WHEN MORE THAN 6 INCHES OF RAIN WAS RECORDED DURING THE EVENING HOURS AND LED TO SIGNIFICANT FLASH FLOODING IN THE CITY. ALTHOUGH AUGUST 2014 WAS THE SECOND WETTEST ON RECORD AT PORTLAND... IT WAS BARELY HALF THE RECORD AUGUST RAINFALL SET IN 1991. HURRICANE BOB BROUGHT VERY HEAVY RAIN THAT HELPED SET THE RECORD AUGUST RAINFALL OF 15.22 INCHES. THE DRIEST AUGUST ON RECORD WAS 1947 WHEN ONLY 0.27 INCHES FELL. THE FOLLOWING TABLE LISTS THE TOP TEN WETTEST AUGUST`S IN PORTLAND`S 144-YEAR HISTORY OF RAINFALL RECORDS. MOST RAIN IN AUGUST RANK INCHES YEAR 1 15.22 1991 2 8.56 2014 <=== 3 8.30 1946 4 8.14 1892 5 7.90 1877 6 6.97 1872 7 6.56 1887 8 6.28 2008 9 6.21 2012 10 6.14 2004 THE TOTAL PRECIPITATION FOR THE YEAR SO FAR STANDS AT 38.20 INCHES THANKS TO A VERY WET JULY ALSO. THIS RANKS AS THE NINTH WETTEST START TO THE YEAR. THE FOLLOWING TABLE LISTS THE WETTEST YEARS ON RECORD THROUGH THE END OF AUGUST. WETTEST YEARS (THROUGH THE END OF AUGUST) RANK INCHES YEAR 1 44.62 1979 2 41.07 1884 3 40.47 1991 4 40.05 2006 5 39.32 1983 6 39.26 2009 7 38.92 1922 8 38.49 1920 9 38.20 2014 <=== 10 37.93 1998 THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN AUGUST 2014... DATE RECORD PREVIOUS 13 6.43 - GREATEST PRECIPITATION 2.38 IN 2004 $$ KIMBLE

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