National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS42 TJSJ 011548
CF6JSJ
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   SAN JUAN AREA/PR
                                          MONTH:     MAY
                                          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  87  73  80  -1   0  15 0.00    M    M 10.5 23  60   M    M   4        30  60
 2  86  75  81   0   0  16 0.06    M    M 10.9 23  70   M    M   4        30  70
 3  86  74  80  -1   0  15 0.11    M    M 11.0 22  60   M    M   5 1      26  70
 4  87  75  81   0   0  16 0.10    M    M 11.0 25  60   M    M   4 1      30  60
 5  87  76  82   1   0  17    T    M    M 12.5 26  70   M    M   4        31  60
 6  87  75  81   0   0  16 0.00    M    M 11.6 24  60   M    M   3        29  60
 7  87  75  81   0   0  16 0.01    M    M 10.7 25  60   M    M   3        30  60
 8  87  75  81   0   0  16 0.01    M    M  9.5 23  90   M    M   4        26  90
 9  88  76  82   1   0  17 0.05    M    M 12.7 25  70   M    M   4 1      32  50
10  88  76  82   1   0  17 0.19    M    M 12.4 25  80   M    M   7 1      32  80
11  87  77  82   1   0  17 0.02    M    M  9.9 23  80   M    M   7        29  60
12  87  76  82   1   0  17    T    M    M 12.5 22  70   M    M   4        27  70
13  88  76  82   1   0  17 0.05    M    M 11.2 26  60   M    M   4 1      32  70
14  88  75  82   1   0  17 0.06    M    M  8.7 25  60   M    M   3 1      30  70
15  91  75  83   2   0  18 0.16    M    M  6.5 21 120   M    M   4 18     27 130
16  92  76  84   2   0  19    T    M    M  4.9 13 140   M    M   3        20 350
17  91  75  83   1   0  18    T    M    M  7.6 20  70   M    M   3        20  60
18  94  76  85   3   0  20 0.00    M    M  6.1 16  70   M    M   2        20  60
19  95  77  86   4   0  21    T    M    M  6.2 16 120   M    M   3 3      22 120
20  91  78  85   3   0  20 0.00    M    M  9.0 21  70   M    M   3        25  70
21  90  76  83   1   0  18 0.02    M    M 10.7 24  80   M    M   4 3      29  90
22  91  76  84   2   0  19 0.06    M    M 13.5 25  80   M    M   6        29  70
23  84  74  79  -3   0  14 1.35    M    M 10.1 22  90   M    M   8 1      27 100
24  88  75  82   0   0  17    T    M    M  9.6 22  60   M    M   3        26  70
25  88  79  84   2   0  19    T    M    M 12.1 22  60   M    M   4        27  80
26  87  78  83   1   0  18    T    M    M 12.4 23  70   M    M   5        28  60
27  88  78  83   1   0  18    T    M    M  8.9 20  60   M    M   4        25  40
28  87  77  82   0   0  17 0.04    M    M  5.9 18  60   M    M   3 3      23  80
29  89  76  83   1   0  18 0.28    M    M  7.5 23 130   M    M   4        29 130
30  88  76  82   0   0  17 0.51    M    M 11.8 25  90   M    M   4 1      32  60
31  87  75  81  -1   0  16 1.03    M    M 10.1 23  70   M    M   5 1      28  60
================================================================================
SM 2741 2351         0 536  4.11    M    308.0          M      128
================================================================================
AV 88.4 75.8                               9.9 FASTST   M    M   4    MAX(MPH)
                                 MISC ---->  # 26  70               # 32  50
================================================================================
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:     MAY
                                          YEAR:      2021
                                          LATITUDE:   18 25 N
                                          LONGITUDE:  66  0 W

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

AVERAGE MONTHLY: 82.1   TOTAL FOR MONTH:   4.11    1 = FOG OR MIST
DPTR FM NORMAL:   0.5   DPTR FM NORMAL:   -1.43    2 = FOG REDUCING VISIBILITY
HIGHEST:    95 ON 19    GRTST 24HR  1.54 ON 30-31      TO 1/4 MILE OR LESS
LOWEST:     73 ON  1                               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:  18
MAX 90 OR ABOVE:   8    0.10 INCH OR MORE:   8
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   3
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   2

[HDD (BASE 65) ]
TOTAL THIS MO.     0    CLEAR  (SCALE 0-3)   6
DPTR FM NORMAL     0    PTCLDY (SCALE 4-7)  25
TOTAL FM JUL 1     0    CLOUDY (SCALE 8-10)  0
DPTR FM NORMAL     0

[CDD (BASE 65) ]
TOTAL THIS MO.   536
DPTR FM NORMAL    23    [PRESSURE DATA]
TOTAL FM JAN 1  2249    HIGHEST SLP 30.13 ON  9
DPTR FM NORMAL   116    LOWEST  SLP 29.93 ON 19

[REMARKS]
#FINAL-05-21#