Climatological Report (Monthly)
Issued by NWS Portland, ME

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
000 CXUS51 KGYX 021921 CCA CLMCON PWMCLMCON 000 TTAA00 KGYX 021757 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 157 PM EDT FRI JUN 2 2017 ................................... ...THE CONCORD NH CLIMATE SUMMARY FOR THE MONTH OF MAY 2017... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1868 TO 2017 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 98 05/22/1911 LOW 21 05/03/1966 05/10/1947 HIGHEST 95 05/18 89 6 94 05/28 LOWEST 30 05/09 28 2 32 05/10 AVG. MAXIMUM 66.0 68.9 -2.9 70.5 AVG. MINIMUM 44.1 42.6 1.5 44.8 MEAN 55.0 55.8 -0.8 57.7 DAYS MAX >= 90 2 0.6 1.4 2 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 2 3.5 -1.5 1 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 11.09 2006 MINIMUM 0.32 1899 TOTALS 5.91 3.66 2.25 2.63 DAILY AVG. 0.19 0.12 0.07 0.08 DAYS >= .01 16 12.4 3.6 13 DAYS >= .10 12 7.1 4.9 7 DAYS >= .50 4 2.4 1.6 2 DAYS >= 1.00 1 0.7 0.3 0 GREATEST 24 HR. TOTAL 1.30 05/25 TO 05/26 SNOWFALL (INCHES) RECORDS TOTAL 5.0 1945 TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 86.3 61.4 24.9 29.7 SNOWDEPTH AVG. 0 DAYS >= TRACE 0 0.0 0.0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 MM 24 HR TOTAL 0.0 MM DEGREE_DAYS HEATING TOTAL 325 303 22 262 SINCE 7/1 6397 7150 -753 6019 COOLING TOTAL 24 16 8 40 SINCE 1/1 32 18 14 40 ................................................................. WIND (MPH) AVERAGE WIND SPEED 6.1 HIGHEST WIND SPEED/DIRECTION 32/310 DATE 05/03 HIGHEST GUST SPEED/DIRECTION 41/320 DATE 05/03 SKY COVER AVERAGE SKY COVER 0.60 AVERAGE RH (PERCENT) 70 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 5 HEAVY RAIN 5 RAIN 12 LIGHT RAIN 19 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 2 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && A PERSISTENT AREA OF LOW PRESSURE DOMINATED THE WEATHER PATTERN IN NEW ENGLAND THROUGH THE FIRST HALF OF MAY. THIS BROUGHT MOSTLY COOL TEMPERATURES AND FREQUENT AFTERNOON SHOWERS ALONG WITH OCCASIONAL PERIODS OF STEADIER RAINFALL. THE FIRST DAY OF THE MONTH ONLY SAW THE TEMPERATURE REACH 49 DEGREES. RAIN WAS OBSERVED ON 11 OF THE FIRST 15 DAYS OF THE MONTH AT CONCORD. THE LAST FREEZE OF THE SEASON OCCURRED ON MAY 9, ABOUT A WEEK LATER THAN NORMAL. THE PESKY LOW PRESSURE AREA FINALLY MOVED OUT OF THE REGION ON THE 16TH, WITH A RIDGE OF HIGH PRESSURE BUILDING IN BEHIND IT. THIS BROUGHT A PERIOD OF MUCH WARMER WEATHER, INCLUDING THE FIRST TWO 90 DEGREE DAYS OF THE SEASON ON THE 17TH AND 18TH. THIS MINI-HEAT WAVE WAS BROUGHT TO AN END WHEN A COLD FRONT DROPPED DOWN FROM CANADA ON THE 19TH, BRINGING COOLER WEATHER FOR THE NEXT FEW DAYS. A NOR`EASTER MOVED UP THE COAST ON THE NIGHT OF THE 25TH, BRINGING 1.30 INCHES OF RAIN TO THE CITY IN A 24 HOUR PERIOD. THE HOLIDAY WEEKEND CLEARED OUT WITH WARM SUNNY DAYS BEFORE COLD, CLOUDY MEMORIAL DAY ON THE 29TH WITH HIGH TEMPERATURE ONLY REACHING 54 DEGREES. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 55.0 DEGREES WHICH WAS 0.8 DEGREES BELOW NORMAL. THE WARMEST MAY ON RECORD WAS IN 1880 WHEN THE AVERAGE TEMPERATURE WAS 64.4 DEGREES. THE COLDEST WAS IN 1917 WHEN IT WAS ONLY 47.6 DEGREES. A TOTAL OF 5.91 INCHES OF PRECIPITATION FELL WHICH WAS 2.25 INCHES ABOVE NORMAL AND MADE 2017 THE 8TH WETTEST MAY ON RECORD. THE HEAVIEST PRECIPITATION WAS ON THE 26TH WHEN 1.19 INCHES FELL. THE WETTEST MAY ON RECORD WAS IN 2006 WHEN 11.09 INCHES WAS MEASURED. THE DRIEST WAS IN 1899 WHEN ONLY 0.32 INCHES FELL. WETTEST MAY (SINCE 1868)... RANK VALUE YEAR 1 11.09 2006 2 9.52 1984 3 8.26 1954 4 6.81 1868 5 6.24 1940 6.24 1892 7 6.09 1901 8 5.91 2017 <=== 9 5.89 1945 10 5.44 1906 NO SNOW FELL DURING THE MONTH. SNOWFALL IN MAY IS QUITE RARE, WITH MEASURABLE SNOW ONLY BEING OBSERVED IN 6 YEARS OF THE 150-YEAR HISTORY OF SNOWFALL OBSERVATIONS AT CONCORD. THE MOST SNOWFALL WAS IN 1945 WHEN 5.0 INCHES FELL. THE MOST RECENT MEASURABLE SNOWFALL WAS IN 1966. IN ADDITION TO THE 6 YEARS WITH MEASURABLE SNOWFALL, THERE HAVE BEEN AN ADDITIONAL 24 YEARS WITH A TRACE OF SNOWFALL OR HAIL BEING OBSERVED, MOST RECENTLY IN 2002. THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN MAY 2017... DATE RECORD PREVIOUS 17 93 - WARMEST HIGH TEMPERATURE 93 IN 1977, TIED 18 95 - WARMEST HIGH TEMPERATURE 90 IN 1906 AND 1889 $$ BECKER

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.