312
CXUS51 KPHI 012313
CLMABE

CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
713 PM EDT MON JUN 01 2026

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

...THE ALLENTOWN PA CLIMATE SUMMARY FOR THE MONTH OF MAY 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1922 TO 2026

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           94   05/18         89       5       83  05/02
                       05/19
LOWEST            36   05/01         35       1       40  05/01
AVG. MAXIMUM    71.7               73.5    -1.8     70.6
AVG. MINIMUM    49.3               50.6    -1.3     51.1
MEAN            60.5               62.0    -1.5     60.8
DAYS MAX >= 90     3                1.0     2.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.62   1984
 MINIMUM        0.09   1964
TOTALS          2.19               3.65   -1.46    10.45
DAILY AVG.      0.07               0.12   -0.05     0.34
DAYS >= .01       12               12.4    -0.4       19
DAYS >= .10        7                7.6    -0.6       14
DAYS >= .50        1                2.6    -1.6        8
DAYS >= 1.00       0                0.7    -0.7        3
GREATEST
 24 HR. TOTAL   0.94   05/23 TO 05/24               2.17

SNOWFALL (INCHES)
RECORDS
 TOTAL             T   2020*
 SNOW DEPTH        0
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1       35.5               33.1     2.4     17.8
SNOWDEPTH AVG.     0                                   0
DAYS >= TRACE      0                0.0     0.0        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    191                151      40      145
 SINCE 7/1      5591               5267     324     5183
COOLING TOTAL     61                 60       1       26
 SINCE 1/1        91                 68      23       27
................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.4
HIGHEST WIND SPEED/DIRECTION    26/220    DATE  05/05
                                26/350          05/28
                                26/350          05/30
HIGHEST GUST SPEED/DIRECTION    40/290    DATE  05/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.41
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HEAVY SNOW                 0
SNOW                      0     LIGHT SNOW                 0
SLEET                     0     FOG                       10
FOG W/VIS <= 1/4 MILE     3     HAZE                       0

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.
*  INDICATES MOST RECENT OF MULTIPLE RECORD YEARS.

$$