785
CXCA52 TJSJ 011231
CLMSJU

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
831 AM AST TUE OCT 01 2024

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

...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1898 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             97   09/01/1981
 LOW              69   09/15/1960
                       09/06/1960
                       09/16/1929
HIGHEST           96   09/15         91       5       96
LOWEST            77   09/11         79      M2       77
                       09/20
AVG. MAXIMUM    91.6               89.2     2.4     91.5
AVG. MINIMUM    80.5               77.5     3.0     80.1
MEAN            86.1               83.4     2.7     85.8
DAYS MAX >= 90    29               12.5    16.5       25
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       15.79   2017
 MINIMUM        1.49   1940
TOTALS          3.45               6.50   M3.05     3.05
DAILY AVG.        MM               0.22      MM     0.10
DAYS >= .01       23               18.3     4.7       17
DAYS >= .10       11               10.8     0.2        8
DAYS >= .50        1                3.7    M2.7        2
DAYS >= 1.00       0                1.3    M1.3        0
GREATEST
 24 HR. TOTAL   0.54   09/20 TO 09/20
 STORM TOTAL    0.54


DEGREE DAYS
HEATING TOTAL      0                  0       0        0
 SINCE 7/1         0
COOLING TOTAL    639                550      89      634
 SINCE 1/1      5090

FREEZE DATES
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.0
HIGHEST WIND SPEED/DIRECTION    28/100    DATE  09/03
HIGHEST GUST SPEED/DIRECTION    35/100    DATE  09/03

SKY COVER
AVERAGE SKY COVER           0.42

AVERAGE RH (PERCENT)     78

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             15     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       6
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      0
HAZE                      5

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

$$