WFO Monthly/Daily Climate Data
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CXUS52 TJSJ 011044
CF6JSJ
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   SAN JUAN AREA/PR
                                          MONTH:     DECEMBER
                                          YEAR:      2021
                                          LATITUDE:   18 25 N
                                          LONGITUDE:  66  0 W

  TEMPERATURE IN F:       :PCPN:    SNOW:  WIND      :SUNSHINE: SKY     :PK WND
================================================================================
1   2   3   4   5  6A  6B    7    8   9   10  11  12  13   14  15   16   17  18
                                     12Z  AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD  WTR  SNW DPTH SPD SPD DIR MIN PSBL S-S WX    SPD DR
================================================================================

 1  86  77  82   2   0  17 0.54    M    M  9.0 21  90   M    M   6 18     30  80
 2  89  77  83   3   0  18 0.23    M    M  7.8 20  80   M    M   4        24  80
 3  86  75  81   2   0  16 0.12    M    M  5.2 15  60   M    M   4        20  30
 4  86  76  81   2   0  16 0.09    M    M  7.5 25  80   M    M   5        31  70
 5  86  75  81   2   0  16 0.79    M    M  8.5 24  90   M    M   5 18     33  90
 6  86  76  81   2   0  16 0.06    M    M  7.7 20  80   M    M   4        26  80
 7  86  74  80   1   0  15 0.08    M    M  9.1 18  80   M    M   5        23  90
 8  86  76  81   2   0  16 0.15    M    M  8.8 20  80   M    M   4 8      25  90
 9  85  75  80   1   0  15 0.34    M    M  8.2 20  70   M    M   5 1      24  70
10  86  75  81   2   0  16 0.17    M    M  9.3 26  80   M    M   5        33  60
11  86  74  80   1   0  15 0.13    M    M 14.6 24  80   M    M   5 8      32  80
12  85  74  80   1   0  15 0.28    M    M 10.7 28  80   M    M   6        33  80
13  85  76  81   2   0  16 0.22    M    M 12.9 23  60   M    M   5        31  90
14  85  75  80   1   0  15 0.27    M    M 14.2 26  70   M    M   5 8      33  80
15  84  75  80   1   0  15 0.13    M    M 11.7 28  70   M    M   5        32  60
16  85  74  80   1   0  15 0.10    M    M 11.9 30  80   M    M   5        36  70
17  85  74  80   1   0  15 0.14    M    M 11.4 28  80   M    M   4 8      41  70
18  83  74  79   0   0  14 0.40    M    M 13.4 26  90   M    M   5 8      34  70
19  84  74  79   0   0  14 0.11    M    M  8.6 23  70   M    M   5 1      29  50
20  82  73  78   0   0  13 0.80    M    M  5.8 20  90   M    M   6 18     22  60
21  84  71  78   0   0  13    T    M    M  5.5 17  80   M    M   4        21  80
22  86  73  80   2   0  15 0.00    M    M  4.1 16  70   M    M   2        19  70
23  87  72  80   2   0  15    T    M    M  3.4 13 160   M    M   3        18 160
24  85  75  80   2   0  15    T    M    M  4.8  9 360   M    M   4        16  10
25  84  74  79   1   0  14 0.49    M    M  6.2 18  70   M    M   5 1      23  90
26  85  74  80   2   0  15 0.01    M    M  4.8 15  70   M    M   4        20  60
27  84  73  79   1   0  14    T    M    M  5.2 17  80   M    M   4        23  50
28  83  74  79   1   0  14 0.01    M    M  6.5 21  70   M    M   5 X      25  50
29  85  75  80   2   0  15 0.00    M    M 10.4 21  70   M    M   4        24  70
30  84  75  80   2   0  15 0.01    M    M 12.7 20  70   M    M   4        25  80
31  84  75  80   2   0  15 0.00    M    M 10.5 21  80   M    M   4        25  80
================================================================================
SM 2637 2310         0 468  5.67    M    270.4          M      141
================================================================================
AV 85.1 74.5                               8.7 FASTST   M    M   5    MAX(MPH)
                                 MISC ---->    30  80                 41  70
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

                                          STATION:   SAN JUAN AREA/PR
                                          MONTH:     DECEMBER
                                          YEAR:      2021
                                          LATITUDE:   18 25 N
                                          LONGITUDE:  66  0 W

[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 79.8   TOTAL FOR MONTH:   5.67    1 = FOG OR MIST
DPTR FM NORMAL:   1.0   DPTR FM NORMAL:    0.82    2 = FOG REDUCING VISIBILITY
HIGHEST:    89 ON  2    GRTST 24HR  0.86 ON  4- 5      TO 1/4 MILE OR LESS
LOWEST:     71 ON 21                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:  M            5 = HAIL
                        GRTST 24HR    M  ON   M    6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:  M  ON   M    7 = DUSTSTORM OR SANDSTORM:
                                                       VSBY 1/2 MILE OR LESS
                                                   8 = SMOKE OR HAZE
[NO. OF DAYS WITH]      [WEATHER - DAYS WITH]      9 = BLOWING SNOW
                                                   X = TORNADO
MAX 32 OR BELOW:   0    0.01 INCH OR MORE:  24
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:  18
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   3
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.     0    CLEAR  (SCALE 0-3)   2
DPTR FM NORMAL     0    PTCLDY (SCALE 4-7)  29
TOTAL FM JUL 1     0    CLOUDY (SCALE 8-10)  0
DPTR FM NORMAL     0

[CDD (BASE 65) ]
TOTAL THIS MO.   468
DPTR FM NORMAL    42    [PRESSURE DATA]
TOTAL FM JAN 1  6147    HIGHEST SLP 30.13 ON 29
DPTR FM NORMAL   348    LOWEST  SLP 29.89 ON 21

[REMARKS]
#FINAL-12-21#


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