022 CXUS51 KPHI 011359 CLMABE CLIMATE REPORT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 959 AM EDT TUE JUN 01 2021 ................................... ...THE ALLENTOWN PA CLIMATE SUMMARY FOR THE MONTH OF MAY 2021... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1922 TO 2021 WEATHER OBSERVED NORMAL DEPART LAST YEAR'S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 97 05/19/1962 LOW 28 05/10/1947 HIGHEST 91 88 3 87 LOWEST 38 36 2 34 AVG. MAXIMUM 72.4 73.5 -1.1 70.6 AVG. MINIMUM 48.2 50.6 -2.4 49.3 MEAN 60.3 62.0 -1.7 60.0 DAYS MAX >= 90 2 1.1 0.9 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.4 -0.4 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 10.62 1984 MINIMUM T 2013 TOTALS 3.56 3.65 -0.09 2.68 DAILY AVG. 0.11 0.12 -0.01 0.09 DAYS >= .01 10 12.4 -2.4 10 DAYS >= .10 7 7.6 -0.6 5 DAYS >= .50 2 2.6 -0.6 3 DAYS >= 1.00 1 0.7 0.3 0 GREATEST 24 HR. TOTAL 1.67 05/28 TO 05/29 1.02 SNOWFALL (INCHES) RECORDS TOTAL MM 5 24 HR TOTAL MM TOTALS 0.0 0.0 0.0 T SINCE 7/1 58.1 33.1 25.0 MM SNOWDEPTH AVG. 0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 0 MM 24 HR TOTAL MM T DEGREE DAYS HEATING TOTAL 195 151 44 197 SINCE 7/1 5263 5275 -12 MM COOLING TOTAL 59 60 -1 48 SINCE 1/1 65 68 -3 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 7.3 HIGHEST WIND SPEED/DIRECTION 28/240 DATE 05/11 HIGHEST GUST SPEED/DIRECTION 37/240 DATE 05/11 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.40 NUMBER OF DAYS FAIR 17 NUMBER OF DAYS PC 7 NUMBER OF DAYS CLOUDY 7 AVERAGE RH (PERCENT) 60 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 2 MIXED PRECIP 0 HEAVY RAIN 5 RAIN 7 LIGHT RAIN 14 FREEZING RAIN 0 LT FREEZING RAIN 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 9 FOG W/VIS <= 1/4 MILE 0 HAZE 3 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$