000
CXUS51 KPHI 011834
CLMABE

CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
234 PM EDT SUN OCT 01 2023

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

...THE ALLENTOWN PA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1922 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             99   09/02/1980
                       09/03/1953
                       09/02/1953
 LOW              30   09/28/1947
HIGHEST           92                 89       3       89
LOWEST            43                 39       4       40
AVG. MAXIMUM    75.6               77.4    -1.8     75.5
AVG. MINIMUM    56.0               55.2     0.8     54.4
MEAN            65.8               66.3    -0.5     64.9
DAYS MAX >= 90     4                1.5     2.5        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       12.99   2011
 MINIMUM        0.12   1943
TOTALS          4.03               4.84   -0.81     3.47
DAILY AVG.      0.13               0.16   -0.03     0.12
DAYS >= .01       14                9.6     4.4       10
DAYS >= .10        9                6.5     2.5        5
DAYS >= .50        3                2.9     0.1        3
DAYS >= 1.00       0                1.5    -1.5        1
GREATEST
 24 HR. TOTAL   0.89   09/09 TO 09/10               1.42

SNOWFALL (INCHES)
RECORDS
 TOTAL           0.0
 24 HR TOTAL      MM
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1        0.0                0.0     0.0       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL      MM                                 0.0

DEGREE DAYS
HEATING TOTAL     81                 69      12       84
 SINCE 7/1        81                 74       7       MM
COOLING TOTAL    112                108       4       90
 SINCE 1/1       772                968    -196       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.3
HIGHEST WIND SPEED/DIRECTION    31/280    DATE  09/07
HIGHEST GUST SPEED/DIRECTION    42/280    DATE  09/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.39
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       9
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HEAVY SNOW                 0
SNOW                      0     LIGHT SNOW                 0
SLEET                     0     FOG                       16
FOG W/VIS <= 1/4 MILE     0     HAZE                       1

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

$$