Climatological Report (Monthly)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
000 CXUS51 KGYX 030301 CLMPWM PWMCLMPWM 000 TTAA00 GYX 021942 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 342 PM EDT SUN JUL 02 2023 ................................... ...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF JUNE 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1941 TO 2023 (FOR TEMPERATURES) CLIMATE RECORD PERIOD: 1871 TO 2023 (FOR PRECIPITATION) CLIMATE RECORD PERIOD: 1882 TO 2023 (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 85 06/02 89 -4 86 06/25 06/26 LOWEST 43 06/04 43 0 45 06/06 06/20 AVG. MAXIMUM 68.7 73.6 -4.9 72.1 AVG. MINIMUM 53.8 55.0 -1.2 53.7 MEAN 61.3 64.3 -3.1 62.9 DAYS MAX >= 90 0 1.0 -1.0 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 5.68 4.15 1.53 2.62 DAILY AVG. 0.19 0.14 0.05 0.09 DAYS >= .01 16 11.7 4.3 11 DAYS >= .10 8 6.9 1.1 6 DAYS >= .50 3 2.5 0.5 2 DAYS >= 1.00 2 1.0 1.0 0 GREATEST 24 HR. TOTAL 1.89 06/17 TO 06/18 SNOWFALL (INCHES) RECORDS TOTAL 0.0 TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 56.5 68.7 -12.2 44.1 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 DEGREE DAYS HEATING TOTAL 136 89 47 98 SINCE 7/1 6267 6794 -527 6498 COOLING TOTAL 29 68 -39 43 SINCE 1/1 35 79 -44 54 ................................................................ WIND (MPH) AVERAGE WIND SPEED 6.7 HIGHEST WIND SPEED/DIRECTION 25/350 DATE 06/06 HIGHEST GUST SPEED/DIRECTION 33/340 DATE 06/06 SKY COVER AVERAGE SKY COVER 0.70 AVERAGE RH (PERCENT) 83 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 5 HEAVY RAIN 4 RAIN 7 LIGHT RAIN 21 FREEZING RAIN 0 LT FREEZING RAIN 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 FOG 23 FOG W/VIS <= 1/4 MILE 6 HAZE 3 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && JUNE GLOOM WAS THE THEME FOR THE MONTH IN THE PORTLAND AREA. THERE WERE 16 DAYS DURING THE MONTH THAT THE PORTLAND AREA RECEIVED MEASURABLE PRECIPITATION WITH AN ADDITIONAL EIGHT DAYS WITH A TRACE OF PRECIPITATION. WHEN IT WASN`T RAINING IT WAS OFTEN CLOUDY WITH THE FREQUENCY OF MID DAY OVERCAST SKIES NEARLY TWICE THAT AS THE CLIMATOLOGICAL AVERAGE. ADDITIONALLY, THERE WERE 23 DAYS DURING THE MONTH WHEN FOG WAS REPORTED AT THE PORTLAND JETPORT. AS A RESULT, TEMPERATURES AVERAGED WELL BELOW NORMAL MOSTLY DUE TO DAY TIME HIGH TEMPERATURES OFTEN BEING RELEGATED TO THE 60S. THE PRIMARY CULPRIT OF THIS DREARY WEATHER WAS A SERIES OF UPPER LOWS THAT SLOWLY MEANDERED THROUGH THE NORTHEAST. WITH JET STREAM WINDS WEAKER THAN NORMAL THESE UPPER LOWS WERE SLOW TO EXIT INTO THE NORTH ATLANTIC. DURING THE SECOND HALF OF THE MONTH THE HUMIDITY ALSO STARTED TO BUILD INTO NEW ENGLAND AND THIS INCREASE IN MOISTURE LED TO SEVERAL DAYS WITH THUNDERSTORMS AND LOCALIZED TORRENTIAL RAINFALL. THESE TORRENTIAL RAINFALL EVENTS RESULTED IN MULTIPLE FLASH FLOODING EVENTS IN MAINE, WHILE THE PORTLAND AREA WAS SPARED FROM THESE EVENTS. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 61.3 DEGREES, WHICH WAS 3.1 DEGREES BELOW NORMAL. THE COOLEST JUNE ON RECORD WAS IN 1958 WHEN THE AVERAGE TEMPERATURE WAS 58.1 DEGREES. THE WARMEST WAS 68.9 DEGREES IN 2021. A TOTAL OF 5.68 INCHES OF PRECIPITATION FELL, WHICH WAS 1.53 INCHES ABOVE NORMAL. THE HEAVIEST RAIN FELL ON THE 17TH INTO THE 18TH WHEN LOW PRESSURE TRACKED ACROSS SOUTHERN NEW ENGLAND INTO THE GULF OF MAINE BRINGING 1.89 INCHES OF RAIN. THE WETTEST JUNE ON RECORD WAS IN 1917 WHEN 10.86 INCHES OF PRECIPITATION FELL. THE DRIEST WAS 0.53 INCHES IN 1908. THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN JUNE 2023... DATE RECORD PREVIOUS JUN 4 50 - LOWEST MAXIMUM TEMPERATURE 51 IN 2018 $$ DS