Climatological Report (Monthly)
Issued by NWS Portland, ME

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000 CXUS51 KGYX 030750 CLMPWM PWMCLMPWM 000 TTAA00 KGYX 020922 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 350 AM EDT FRI JUL 3 2015 ................................... ...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF JUNE 2015... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1941 TO 2015 /FOR TEMPERATURES/ CLIMATE RECORD PERIOD 1871 TO 2015 /FOR PRECIPITATION/ CLIMATE RECORD PERIOD 1882 TO 2015 /FOR SNOWFALL/ WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 98 06/28/1991 LOW 33 06/04/1944 HIGHEST 86 06/11 89 -3 85 06/28 LOWEST 43 06/07 43 0 45 06/01 06/05 AVG. MAXIMUM 69.7 73.2 -3.5 74.2 AVG. MINIMUM 53.1 53.6 -0.5 54.0 MEAN 61.4 63.4 -2.0 64.1 DAYS MAX >= 90 0 0.7 -0.7 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 10.86 1917 MINIMUM 0.53 1908 TOTALS 6.40 3.79 2.61 4.30 DAILY AVG. 0.21 0.13 0.08 0.14 DAYS >= .01 14 11.8 2.2 5 DAYS >= .10 10 6.8 3.2 5 DAYS >= .50 5 2.3 2.7 3 DAYS >= 1.00 3 0.9 2.1 1 GREATEST 24 HR. TOTAL 1.60 05/31 TO 06/01 SNOWFALL (INCHES) RECORDS TOTAL 0.0 TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 94.5 61.9 32.6 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 DEGREE_DAYS HEATING TOTAL 144 106 38 77 SINCE 7/1 7076 7107 -31 7438 COOLING TOTAL 43 57 -14 56 SINCE 1/1 83 64 19 56 ................................................................. WIND (MPH) AVERAGE WIND SPEED 6.9 HIGHEST WIND SPEED/DIRECTION 26/060 DATE 06/28 HIGHEST GUST SPEED/DIRECTION 36/060 DATE 06/28 SKY COVER AVERAGE SKY COVER 0.60 AVERAGE RH (PERCENT) 75 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 HEAVY RAIN 4 RAIN 4 LIGHT RAIN 15 FREEZING RAIN 0 LT FREEZING RAIN 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 FOG 17 FOG W/VIS <= 1/4 MILE 1 HAZE 2 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. AFTER PORTLAND BOASTED A RECORD WARM AND NEAR-RECORD DRY MAY, JUNE BROUGHT A MUCH DIFFERENT WEATHER STORY. THE EXTENDED DRY AND WARM WEATHER PATTERN FINALLY BROKE AT THE END OF MAY AND THE BEGINNING OF JUNE WHEN 2.80 INCHES OF RAIN FELL FROM THE 31ST THROUGH THE 2ND. THIS RAINSTORM USHERED IN A CHANGE IN THE WEATHER PATTERN AS THE NEXT WEEK SAW BELOW NORMAL TEMPERATURES, THE HIGH TEMPERATURE ON JUNE 2 WAS ONLY 50 DEGREES, THE COLDEST JUNE HIGH TEMPERATURE IN NEARLY 60 YEARS. A LITTLE WARMER WEATHER ARRIVED IN THE MIDDLE OF THE MONTH WHEN 4 STRAIGHT DAYS TOPPED 80 DEGREES FROM THE 10TH THROUGH THE 13TH. BUT THEN A PERSISTENT STREAM OF COLD FRONTS BROUGHT ALTERNATING DAYS OF WARMER AND COOLER WEATHER, CULMINATING IN TWO MORE ROUNDS OF HEAVIER RAIN ON THE 21ST AND THE 28TH ALONG WITH COOLER TEMPERATURES. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 61.4 DEGREES WHICH WAS 2.0 DEGREES COOLER THAN NORMAL. THIS WAS THE COOLEST JUNE SINCE 2009 WHEN THE AVERAGE TEMPERATURE WAS 61.0 DEGREES. THE COOLEST JUNE ON RECORD WAS 1958 WITH AN AVERAGE TEMPERATURE OF 58.1 DEGREES. THE WARMEST WAS 2001 AT 67.2 DEGREES. THE HIGH TEMPERATURE ON JUNE 2ND WAS ONLY 50 DEGREES. PORTLAND HAS NOT SEEN A COLDER HIGH TEMPERATURE IN JUNE SINCE 1956. IT TIED FOR THE 4TH COLDEST HIGH TEMPERATURE EVER FOR THE MONTH OF JUNE. THE HIGH TEMPERATURE OF 51 DEGREES ON JUNE 1ST ALSO MADE THE TOP TEN COLDEST DAYS IN JUNE. THE FOLLOWING TABLE LISTS THE COLDEST HIGH TEMPERATURES IN THE MONTH OF JUNE. COLDEST DAILY HIGH TEMPERATURES IN JUNE /SINCE 1941/ RANK TEMP DATE 1 47 JUNE 9, 1956 2 48 JUNE 1, 1946 3 49 JUNE 5, 1945 4 50 JUNE 2, 2015 <=== 50 JUNE 15, 2005 50 JUNE 1, 1992 50 JUNE 13, 1982 50 JUNE 13, 1948 9 51 JUNE 1, 2015 <=== 51 JUNE 7, 1977 51 JUNE 9, 1948 51 JUNE 8, 1947 51 JUNE 17, 1942 THE AVERAGE HIGH TEMPERATURE IN THE MONTH OF JUNE WAS 69.7 DEGREES. WHILE THIS DOES NOT QUITE CRACK THE TOP TEN LIST OF COOLEST AVERAGE MAX TEMPERATURES IN JUNE, IT IS THE FIRST TIME IN PORTLAND`S RECORDED HISTORY THAT THE AVERAGE HIGH TEMPERATURE IN JUNE WAS COOLER THAN THE AVERAGE HIGH TEMPERATURE IN MAY (71.4 DEGREES). THIS WAS MADE POSSIBLE BY THE COMBINATION OF THE RECORD WARM MAY AND THE SIGNIFICANTLY COOLER THAN NORMAL JUNE. THE ONLY OTHER YEAR THAT CAME CLOSE TO SEEING A SIMILAR SCENARIO WAS 1977 WHEN THE AVERAGE HIGH TEMPERATURE IN JUNE WAS ONLY 0.5 DEGREES WARMER THAN THE AVERAGE HIGH IN MAY (67.4 AND 66.9 RESPECTIVELY). A TOTAL OF 6.40 INCHES OF RAIN FELL WHICH WAS 2.61 INCHES ABOVE NORMAL. THE HEAVIEST RAIN FELL ON JUNE 21ST THROUGH JUNE 23RD WHEN 2.35 INCHES WAS MEASURED. THE WETTEST JUNE ON RECORD WAS 1917 WHEN 10.86 INCHES FELL. THE DRIEST WAS 1908 WITH ONLY 0.53 INCHES. THROUGH THE FIRST HALF OF THE YEAR, 23.01 INCHES OF RAIN HAS FALLEN. WHILE THIS IS 0.02 INCHES ABOVE NORMAL, IT IS ALSO THE DRIEST FIRST HALF OF THE YEAR SINCE 2007 WHEN ONLY 21.45 INCHES HAD FALLEN UP TO THIS POINT. THE DRIEST FIRST HALF OF THE YEAR WAS 1941 WHEN ONLY 10.97 INCHES FELL. THERE WERE 3 SEPARATE DAYS IN JUNE THAT RECORDED MORE THAN 1 INCH OF RAINFALL. THE 1ST RECORDED 1.20 INCHES, THE 21ST HAD 1.40 INCHES, AND THE 28TH HAD 1.58 INCHES. THIS TIES FOR THE MOST ON RECORD IN THE 145-YEAR HISTORY OF PRECIPITATION RECORDS IN PORTLAND. THERE WERE 5 OTHER YEARS WHICH ALSO HAD 3 SUCH DAYS (2005, 1998, 1935, 1922, AND 1917). THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN JUNE 2015... DATE RECORD PREVIOUS 2 50 - COOLEST HIGH TEMPERATURE 54 IN 2001 28 1.58 - GREATEST PRECIPITATION 1.18 IN 1968 $$ KIMBLE

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