800
CDUS41 KPHI 211140
CLIABE
CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
740 AM EDT THU MAY 21 2026
...............................
..THE ALLENTOWN PA CLIMATE SUMMARY FOR MAY 20 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1922 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 90 2:06 PM 92 1962 75 15 66
1996
MINIMUM 61 11:45 PM 32 2002 52 9 41
AVERAGE 76 63 13 54
PRECIPITATION (IN)
YESTERDAY 0.20 1.92 1984 0.12 0.08 0.00
MONTH TO DATE 0.96 2.29 -1.33 7.38
SINCE MAR 1 9.69 9.59 0.10 13.11
SINCE JAN 1 13.43 15.66 -2.23 16.44
SNOWFALL (IN)
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE MAR 1 T 6.8 -6.8 0.0
SINCE JUL 1 35.5 33.1 2.4 17.8
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 4 -4 11
MONTH TO DATE 142 116 26 59
SINCE MAR 1 1139 1273 -134 1055
SINCE JUL 1 5542 5232 310 5097
COOLING
YESTERDAY 11 2 9 0
MONTH TO DATE 49 28 21 22
SINCE MAR 1 79 36 43 23
SINCE JAN 1 79 36 43 23
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 6.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 6:00 PM
LOWEST 45 2:00 PM
AVERAGE 68
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THE ALLENTOWN PA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 92 1934
MINIMUM TEMPERATURE (F) 52 32 2002
SUNRISE AND SUNSET
MAY 21 2026...........SUNRISE 5:40 AM EDT SUNSET 8:18 PM EDT
MAY 22 2026...........SUNRISE 5:39 AM EDT SUNSET 8:18 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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