351
CXCA52 TJSJ 011234
CLMSJU

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
834 AM AST WED OCT 01 2025

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

...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1898 TO 2025

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           95   09/28         91       4       96
LOWEST            76   09/19         79      -3       77
                       09/20
                       09/24
AVG. MAXIMUM    89.9               89.2     0.7     91.6
AVG. MINIMUM    78.0               77.5     0.5     80.5
MEAN            84.0               83.4     0.6     86.1
DAYS MAX >= 90    17               12.5     4.5       29
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          6.60               6.50    0.10     3.45
DAILY AVG.      0.22               0.22    0.00       MM
DAYS >= .01       25               18.3     6.7       23
DAYS >= .10       15               10.8     4.2       11
DAYS >= .50        6                3.7     2.3        1
DAYS >= 1.00       1                1.3    -0.3        0
GREATEST
 24 HR. TOTAL     MM
 STORM TOTAL      MM


DEGREE DAYS
HEATING TOTAL      0                  0       0        0
 SINCE 7/1         0
COOLING TOTAL    576                550      26      639
 SINCE 1/1      4621

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

WIND (MPH)
AVERAGE WIND SPEED              5.6
HIGHEST WIND SPEED/DIRECTION    25/080    DATE  09/10
HIGHEST GUST SPEED/DIRECTION    37/080    DATE  09/08

SKY COVER
AVERAGE SKY COVER           0.40

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             13     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       6
LIGHT RAIN               20     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      0
HAZE                      3

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

$$