Climatological Report (Monthly)
Issued by NWS San Juan, PR

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797
CXCA52 TJSJ 010915
CLMSJU

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN JUAN PR
515 AM AST FRI AUG 01 2025

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

...THE SAN JUAN AREA/PR CLIMATE SUMMARY FOR THE MONTH OF JULY 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             95   07/10/1981
 LOW              69   07/01/1959
                       07/12/1952
                       07/11/1952
HIGHEST           92   07/05         92       0       94
LOWEST            76   07/02         73       3       78
                       07/08
                       07/19
AVG. MAXIMUM    89.4               88.7     0.7     90.9
AVG. MINIMUM    78.0               77.6     0.4     80.5
MEAN            83.7               83.1     0.6     85.7
DAYS MAX >= 90    12               10.1     1.9       27
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       14.17   2013
 MINIMUM        1.10   1929
TOTALS          5.57               6.02   -0.45     4.76
DAILY AVG.      0.18               0.19   -0.01     0.15
DAYS >= .01       28               19.0     9.0       27
DAYS >= .10       17               10.7     6.3       10
DAYS >= .50        3                3.6    -0.6        4
DAYS >= 1.00       1                1.4    -0.4        0
GREATEST
 24 HR. TOTAL     MM
 STORM TOTAL    1.04


DEGREE DAYS
HEATING TOTAL      0                  0       0        0
 SINCE 7/1         0
COOLING TOTAL    586                563      23      647
 SINCE 1/1      3437

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

WIND (MPH)
AVERAGE WIND SPEED              10.8
HIGHEST WIND SPEED/DIRECTION    30/080    DATE  07/20
HIGHEST GUST SPEED/DIRECTION    36/080    DATE  07/16
                                36/080          07/20

SKY COVER
AVERAGE SKY COVER           0.42

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       4
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

$$