605
CXUS51 KPHI 011735
CLMABE

CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
135 PM EDT THU MAY 01 2025

...................................

...THE ALLENTOWN PA CLIMATE SUMMARY FOR THE MONTH OF APRIL 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1922 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             93   04/18/1976
 LOW              12   04/01/1923
HIGHEST           81   04/19         83      -2       88  04/29
                       04/24
                       04/29
LOWEST            27   04/09         26       1       30  04/08
                                                          04/22
AVG. MAXIMUM    63.5               63.4     0.1     63.1
AVG. MINIMUM    40.9               40.3     0.6     41.8
MEAN            52.2               51.8     0.4     52.5
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     5                6.1    -1.1        4
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.09   1952
 MINIMUM        0.61   1985
TOTALS          2.05               3.67   -1.62     5.56
DAILY AVG.      0.07               0.12   -0.05     0.19
DAYS >= .01        9               11.8    -2.8       13
DAYS >= .10        6                6.8    -0.8        8
DAYS >= .50        1                2.3    -1.3        3
DAYS >= 1.00       0                0.9    -0.9        3
GREATEST
 24 HR. TOTAL   1.03   04/11 TO 04/12               2.00

SNOWFALL (INCHES)
RECORDS
 TOTAL          13.4   1982
 SNOW DEPTH       12   04/02/1924
TOTALS           0.0                0.5    -0.5      0.0
SINCE 7/1       17.8               33.1   -15.3     25.2
SNOWDEPTH AVG.     0                                   0
DAYS >= TRACE      0                                   0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0
 24 HR TOTAL     0.0                                 0.0

DEGREE DAYS
HEATING TOTAL    378                403     -25      380
 SINCE 7/1      5038               5124     -86     4746
COOLING TOTAL      1                  8      -7       11
 SINCE 1/1         1                  8      -7       11
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.7
HIGHEST WIND SPEED/DIRECTION    32/300    DATE  04/15
HIGHEST GUST SPEED/DIRECTION    52/290    DATE  04/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.47
NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       4
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HEAVY SNOW                 0
SNOW                      0     LIGHT SNOW                 0
SLEET                     0     FOG                        8
FOG W/VIS <= 1/4 MILE     0     HAZE                       0

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

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