Climatological Report (Monthly)
Issued by NWS Portland, ME
Issued by NWS Portland, ME
000 CXUS51 KGYX 042316 CLMCON PWMCLMCON 000 TTAA00 GYX 020949 CLIMATE REPORT NATIONAL WEATHER SERVICE GRAY ME 548 AM EDT FRI JUN 02 2023 ................................... ...THE CONCORD NH CLIMATE SUMMARY FOR THE MONTH OF MAY 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1868 TO 2023 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 91 05/28 89 2 93 05/22 LOWEST 25 05/18 28 -3 28 05/09 AVG. MAXIMUM 71.3 69.3 2.0 73.3 AVG. MINIMUM 40.3 44.1 -3.8 46.1 MEAN 55.8 56.7 -0.9 59.7 DAYS MAX >= 90 1 1.0 0.0 2 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 3 3.2 -0.2 4 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 11.09 2006 MINIMUM 0.32 1899 TOTALS 2.68 3.47 -0.79 2.99 DAILY AVG. 0.09 0.11 -0.02 0.10 DAYS >= .01 8 12.4 -4.4 8 DAYS >= .10 5 7.3 -2.3 7 DAYS >= .50 3 2.2 0.8 2 DAYS >= 1.00 0 0.5 -0.5 0 GREATEST 24 HR. TOTAL 0.89 05/20 SNOWFALL (INCHES) RECORDS TOTAL 5.0 1945 TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 64.5 67.7 -3.2 44.6 SNOWDEPTH AVG. 0 DAYS >= TRACE 0 0.0 0.0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 24 HR TOTAL 0 DEGREE DAYS HEATING TOTAL 279 278 1 214 SINCE 7/1 6167 6909 -742 6396 COOLING TOTAL 5 20 -15 56 SINCE 1/1 9 22 -13 56 ................................................................ WIND (MPH) AVERAGE WIND SPEED 6.4 HIGHEST WIND SPEED/DIRECTION 28/190 DATE 05/02 HIGHEST GUST SPEED/DIRECTION 42/220 DATE 05/01 SKY COVER AVERAGE SKY COVER 0.25 AVERAGE RH (PERCENT) 62 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 1 HEAVY RAIN 2 RAIN 5 LIGHT RAIN 8 FREEZING RAIN 0 LT FREEZING RAIN 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 FOG 10 FOG W/VIS <= 1/4 MILE 1 HAZE 0 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && THE COOL, CLOUDY, AND DAMP PATTERN THAT DOMINATED THE SECOND HALF OF APRIL PERSISTED INTO THE FIRST WEEK OF MAY. A SIGNIFICANT RAIN EVENT THAT STARTED ON APRIL 30TH CONTINUED INTO MAY 1ST WHERE THE CONCORD AREA RECEIVED 1.38 INCHES OF RAIN WITH UPWARDS OF 2 TO 4 INCHES FALLING ACROSS THE MOUNTAINS AND CENTRAL NEW HAMPSHIRE LEADING TO SOME FLOODING. THE CONCORD AREA WENT ON TO RECORD MEASURABLE PRECIPITATION FOR THE NEXT THREE DAYS OF THE MONTH WITH TEMPERATURES AVERAGING BELOW NORMAL. THE BLOCKING PATTERN ASSOCIATED WITH THE NEGATIVE PHASE OF THE NAO WAS RESPONSIBLE FOR THIS PROLONGED PERIOD OF DREARY WEATHER, AND THIS PATTERN BROKE DOWN BY THE END OF THE FIRST WEEK OF MAY. A PERIOD OF DRY WEATHER ENSUED, AND WITH THE EXCEPTION OF A COUPLE COOL DAYS AND SEASONABLY COLD NIGHTS, TEMPERATURES AVERAGED ABOVE NORMAL THROUGH THE MIDDLE OF THE MONTH. TOWARDS THE END OF THIS DRY STRETCH OF WEATHER A COLD FRONT CROSSED ON THE 17TH WITH A CANADIAN HIGH PRESSURE SYSTEM BUILDING IN BEHIND THE FRONT. THIS HIGH ALLOWED FOR STRONG RADIATIONAL COOLING WITH THE LAST FREEZE OF THE SEASON OCCURING ON THE MORNING OF THE 18TH WHEN THE LOW TEMPERATURE DROPPED TO 25 DEGREES. A COUPLE DAYS LATER A COASTAL LOW PRESSURE SYSTEM MERGED WITH A COLD FRONT APPROACHING FROM THE WEST BRINGING SIGNIFICANT RAINFALL TO THE CONCORD AREA WHEN A STORM TOTAL OF 0.89 INCHES FELL ON THE 20TH. COOL WEATHER FOLLOWED THIS HEAVY RAIN EVENT BEFORE A RIDGE OF HIGH PRESSURE BUILT IN OVER THE NORTHEAST RESULTING IN VERY WARM WEATHER TO CLOSE OUT THE MONTH OF MAY. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 55.8 DEGREES, WHICH WAS 0.9 DEGREES BELOW NORMAL. THE COOLEST MAY ON RECORD WAS IN 1917 WHEN THE AVERAGE TEMPERATURE WAS 47.6 DEGREES. THE WARMEST MAY ON RECORD WAS IN 1880 WHEN THE AVERAGE TEMPERATURE WAS 64.4 DEGREES. A TOTAL OF 2.68 INCHES OF PRECIPITATION FELL, WHICH WAS 0.79 INCHES BELOW NORMAL. THE DRIEST MAY ON RECORD WAS IN 1899 WHEN ONLY 0.32 INCHES OF PRECIPITATION FELL. THE WETTEST WAS 11.09 INCHES IN 2006. NO RECERDS WERE SET OR TIED DURING THE MONTH OF MAY AT CONCORD. $$ DS