Climatological Report (Monthly)
Issued by NWS Portland, ME

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000 CXUS51 KGYX 052235 CCA CLMPWM PWMCLMPWM 000 TTAA00 KGYX 052031 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 613 PM EDT THU MAY 5 2016 ................................... ...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF APRIL 2016... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1941 TO 2016 /FOR TEMPERATURES/ CLIMATE RECORD PERIOD 1871 TO 2016 /FOR PRECIPITATION/ CLIMATE RECORD PERIOD 1882 TO 2016 /FOR SNOWFALL/ WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 92 04/28/2009 LOW 8 04/04/1954 HIGHEST 68 04/22 75 -7 70 04/14 04/21 LOWEST 17 04/06 24 -7 23 04/05 04/04 04/02 AVG. MAXIMUM 53.4 53.3 0.1 54.9 AVG. MINIMUM 32.0 34.7 -2.7 34.4 MEAN 42.7 44.0 -1.3 44.7 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 1 0.2 0.8 0 DAYS MIN <= 32 16 10.4 5.6 12 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 9.90 1973 MINIMUM 0.28 1999 TOTALS 1.56 4.32 -2.76 5.03 DAILY AVG. 0.05 0.14 -0.09 0.17 DAYS >= .01 12 11.2 0.8 10 DAYS >= .10 4 7.0 -3.0 7 DAYS >= .50 0 2.9 -2.9 2 DAYS >= 1.00 0 1.0 -1.0 2 GREATEST 24 HR. TOTAL 0.48 04/07 SNOWFALL (INCHES) RECORDS TOTAL 20.5 1906 TOTALS 3.7 2.8 0.9 2.9 SINCE 7/1 51.8 61.9 -10.1 94.5 SNOWDEPTH AVG. 0 DAYS >= TRACE 4 1.0 3.0 DAYS >= 1.0 2 0.6 1.4 GREATEST SNOW DEPTH 1 04/27 04/05 24 HR TOTAL 2.2 04/26 DEGREE_DAYS HEATING TOTAL 665 630 35 602 SINCE 7/1 5792 6648 -856 6726 COOLING TOTAL 0 0 0 0 SINCE 1/1 0 0 0 0 ................................................................. WIND (MPH) AVERAGE WIND SPEED 8.4 HIGHEST WIND SPEED/DIRECTION 37/310 DATE 04/03 HIGHEST GUST SPEED/DIRECTION 49/280 DATE 04/03 SKY COVER AVERAGE SKY COVER 0.40 AVERAGE RH (PERCENT) 56 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 HEAVY RAIN 0 RAIN 2 LIGHT RAIN 10 FREEZING RAIN 0 LT FREEZING RAIN 0 HEAVY SNOW 1 SNOW 1 LIGHT SNOW 4 FOG 10 FOG W/VIS <= 1/4 MILE 2 HAZE 2 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && AFTER A FEW WARM DAYS TO START THE MONTH, THE WEATHER TOOK A TURN TOWARD MUCH COLDER TEMPERATURES. LIGHT SNOW FELL ON THE 3RD, 4TH, AND 6TH. FOR THREE STRAIGHT DAYS THE TEMPERATURE DROPPED INTO THE TEENS, THE MOST DAYS SUCH DAYS IN APRIL SINCE 1964. THE TEMPERATURE BOTTOMED OUT AT 17 DEGREES ON THE 4TH AND 6TH. THIS WAS THE COLDEST TEMPERATURE OBSERVED IN APRIL SINCE 1995. DAYTIME TEMPERATURES THEN BEGAN TO WARM UP BACK TOWARD NORMAL LEVELS WHILE A PERSISTENTLY DRY AIR MASS ALLOWED NIGHTTIME TEMPERATURES TO REMAIN NEAR OR BELOW NORMAL. AFTER A COUPLE OF WARM DAYS WHERE THE TEMPERATURE ROSE INTO THE UPPER 60S, COLD WEATHER AGAIN RETURNED FOR THE LAST WEEK OF THE MONTH. A RARE LATE APRIL SNOWSTORM BROUGHT MORE THAN 2 INCHES OF SNOWFALL ON APRIL 26. THIS WAS THE LATEST SNOWSTORM OBSERVED AT PORTLAND SINCE 1993. THE AVERAGE TEMPERATURE WAS 42.7 DEGREES WHICH WAS 1.3 DEGREES BELOW NORMAL AND THE COLDEST APRIL SINCE 2007. THIS BREAKS THE STREAK OF 8 CONSECUTIVE MONTHS OF ABOVE NORMAL TEMPERATURES AT PORTLAND. WHILE DAYTIME HIGH TEMPERATURES WERE NEAR NORMAL IN APRIL, IT WAS THE COLD NIGHTTIME LOW TEMPERATURES THAT DROVE THE AVERAGE TEMPERATURE BELOW NORMAL. THIS IS TYPICAL OF THE DRY AIR MASSES THAT PERSISTENTLY DOMINATED THE WEATHER PATTERN IN APRIL. THE COLDEST APRIL WAS IN 1943 WHEN THE AVERAGE TEMPERATURE WAS ONLY 38.4 DEGREES. THE WARMEST WAS IN 2010 WITH AN AVERAGE OF 48.8 DEGREES. ON APRIL 1ST THE LOW TEMPERATURE WAS ONLY 51 DEGREES. THIS WAS THE 3RD WARMEST LOW TEMPERATURE OBSERVED IN THE MONTH OF APRIL AND THE EARLIEST DATE WITH A LOW TEMPERATURE OF 50 OR MORE. ON APRIL 4TH THE HIGH TEMPERATURE ONLY REACHED 25 DEGREES. THIS WAS THE THIRD COLDEST HIGH TEMPERATURE OBSERVED IN THE MONTH OF APRIL. THE FOLLOWING TABLES LIST THE WARMEST DAILY LOW TEMPERATURES AND COLDEST DAILY HIGH TEMPERATURES IN APRIL. WARMEST DAILY LOW TEMPERATURES IN APRIL (SINCE 1940)... RANK TEMP DATE 1 54 APRIL 28, 2011 2 52 APRIL 30, 1942 3 51 APRIL 1, 2016 <=== 51 APRIL 29, 2003 51 APRIL 29, 1974 COLDEST DAILY HIGH TEMPERATURES IN APRIL (SINCE 1940)... RANK TEMP DATE 1 23 APRIL 7, 1982 2 24 APRIL 5, 1995 3 25 APRIL 4, 2016 <=== 4 27 APRIL 6, 1982 5 28 APRIL 5, 2003 A TOTAL OF 1.56 INCHES OF PRECIPITATION FELL WHICH WAS 2.76 INCHES BELOW NORMAL AND THE DRIEST APRIL SINCE 2010. THERE WERE NO VERY HEAVY RAINFALL PERIODS THIS MONTH, WITH THE HEAVIEST PRECIPITATION FALLING ON THE 7TH WHEN 0.48 INCHES WAS MEASURED. THE DRIEST APRIL WAS 1999 WHEN ONLY 0.28 INCHES OF PRECIPITATION WAS RECORDED. THE WETTEST WAS 1973 WITH 9.90 INCHES. THERE WAS 3.7 INCHES OF SNOWFALL IN APRIL WHICH WAS 0.9 INCHES ABOVE NORMAL. THE MOST SNOWFALL FELL ON APRIL 26 WHEN 2.2 INCHES WAS MEASURED. THIS WAS ALSO THE LATEST SNOWFALL RECORDED AT PORTLAND SINCE 1993. APRIL SNOWFALL IS TYPICALLY HIT OR MISS. THE SNOWIEST APRIL WAS 1906 WHEN 20.5 INCHES FELL. BUT THERE HAVE BEEN 10 TIMES THAT NO SNOW WAS OBSERVED IN APRIL, MOST RECENTLY IN 2009. THERE HAVE BEEN AN ADDITIONAL 29 TIMES WHICH ONLY RECORDED A TRACE OF SNOWFALL IN APRIL, MOST RECENTLY IN 2012. THE FOLLOWING TABLE LISTS ALL OF THE RECORDED SNOWSTORMS AT PORTLAND ON APRIL 26 OR LATER. ALL SNOWSTORMS APRIL 26 OR LATER (SINCE 1882)... RANK SNOW DATE 1 7.0 MAY 10-11, 1945 (LATEST SNOWFALL) 2 3.3 APR 28-29, 1987 3 2.2 APR 26, 2016 <=== 4 2.0 MAY 8-10, 1966 5 1.9 APR 26, 1887 6 1.5 APR 28, 1958 1.5 APR 26-27, 1885 8 0.5 APR 26, 1890 9 0.4 APR 27, 1993 (MOST RECENT) 10 0.1 MAY 7, 1967 0.1 APR 27, 1933 AS OF THE END OF APRIL, THE SEASON TOTAL SNOWFALL STANDS AT 51.8 INCHES WHICH IS 10.1 INCHES BELOW NORMAL AND THE LEAST SNOW SINCE THE 2011-12 SEASON. THE FIRST SNOWFALL OF THE SEASON WAS THE SECOND LATEST ON RECORD WHEN 7.3 INCHES FELL ON DECEMBER 29-30. THE HEAVIEST SNOWFALL WAS ON FEBRUARY 5 WHEN 8.8 INCHES WAS MEASURED. THE LAST SNOWFALL WAS ON APRIL 26 WHEN 2.2 INCHES FELL, THE LATEST SNOWFALL IN MORE THAN 20 YEARS. THE SNOWIEST SEASON ON RECORD WAS 1970-71 WHEN 14.5 INCHES FELL. THE LEAST SNOWY WAS 1979-80 WITH ONLY 27.5 INCHES. THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN APRIL 2016... DATE RECORD PREVIOUS 1 51 - WARMEST LOW TEMPERATURE 45 IN 1945 1 58 - WARMEST AVERAGE TEMPERATURE 57 IN 1945 4 25 - COLDEST HIGH TEMPERATURE 31 IN 1954 26 2.2 - GREATEST SNOWFALL 1.9 IN 1887 $$ KIMBLE

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