WFO Monthly/Daily Climate Data
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
CXUS55 KSEW 030102
CF6SEA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   SEATTLE-TACOMA WA AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2020
                                          LATITUDE:   47 27 N
                                          LONGITUDE: 122 18 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  49  36  43   1  22   0 0.00  0.0    0  9.4 20  20   M    M   3 1      25  10
 2  60  38  49   7  16   0 0.00  0.0    0  8.3 16 110   M    M   1        21 120
 3  50  37  44   2  21   0 0.00  0.0    0  3.4 12 130   M    M   7 1      14 130
 4  54  36  45   3  20   0 0.00  0.0    0  4.1 12  20   M    M   3        14  30
 5  58  35  47   6  18   0    T  0.0    0  5.9 20 110   M    M   4 12     23 100
 6  54  43  49   8  16   0 0.03  0.0    0  9.2 15 190   M    M   8 1      21 220
 7  52  43  48   7  17   0    T  0.0    0  5.5 14 210   M    M   9 1      21 210
 8  52  48  50   9  15   0 0.73  0.0    0  8.0 17 350   M    M  10 1      21 340
 9  50  40  45   4  20   0 0.17  0.0    0  6.3 18 210   M    M   9 1      23 220
10  44  37  41   0  24   0 0.04  0.0    0  7.8 17 210   M    M   9 12     20 190
11  47  37  42   1  23   0    T  0.0    0  8.3 18 190   M    M   7 1      23 190
12  45  31  38  -2  27   0 0.00  0.0    0  5.9 17 110   M    M   6 12     22 110
13  45  39  42   2  23   0 0.20  0.0    0  8.9 18 120   M    M  10 1      22 120
14  50  43  47   7  18   0 0.10  0.0    0  9.1 17 220   M    M   9 1      21 230
15  48  42  45   5  20   0 0.42  0.0    0 12.4 22 170   M    M  10 1      30 200
16  50  45  48   8  17   0 0.49  0.0    0 11.9 25 210   M    M  10 1      34 210
17  50  44  47   7  18   0 0.07  0.0    0 13.9 25 180   M    M   9        37 170
18  52  44  48   8  17   0 0.19  0.0    0 14.8 24 200   M    M  10 1      32 180
19  53  46  50  10  15   0 0.45  0.0    0 11.9 26 200   M    M  10 1      33 190
20  54  47  51  11  14   0 0.06  0.0    0 10.8 23 200   M    M   9 1      32 190
21  59  34  47   7  18   0 1.64  0.5    0  8.9 25 200   M    M  10 12     34 200
22  46  34  40   0  25   0 0.00  0.0    0  5.3 10 110   M    M   5 1      14 120
23  43  31  37  -3  28   0 0.00  0.0    0  5.9 15  20   M    M   4 12     17  30
24  44  28  36  -4  29   0 0.00  0.0    0  2.9 10 110   M    M   6 12     13 120
25  49  35  42   2  23   0 0.34  0.0    0  7.8 20 100   M    M  10 1      26 130
26  50  42  46   6  19   0 0.11  0.0    0 12.5 25 200   M    M   8 18     31 190
27  49  39  44   4  21   0 0.13  0.0    0  6.7 14 140   M    M   8 1      18 150
28  47  33  40   0  25   0 0.00  0.0    0  7.9 14 350   M    M   3 12     18  70
29  41  34  38  -2  27   0 0.16  0.0    0  4.6 13 120   M    M  10 1      15 150
30  50  40  45   4  20   0 0.97  0.0    0 12.0 26 120   M    M  10 1      37 120
31  50  46  48   7  17   0 0.35  0.0    0 12.1 24 190   M    M  10 1      31 190
================================================================================
SM 1545 1207       633   0  6.65  0.5    262.4          M      237
================================================================================
AV 49.8 38.9                               8.5 FASTST   M    M   8    MAX(MPH)
                                 MISC ---->  # 26 200               # 37 170
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:   SEATTLE-TACOMA WA AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2020
                                          LATITUDE:   47 27 N
                                          LONGITUDE: 122 18 W

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

AVERAGE MONTHLY: 44.4   TOTAL FOR MONTH:   6.65    1 = FOG OR MIST
DPTR FM NORMAL:   3.8   DPTR FM NORMAL:    1.30    2 = FOG REDUCING VISIBILITY
HIGHEST:    60 ON  2    GRTST 24HR  1.68 ON 20-21      TO 1/4 MILE OR LESS
LOWEST:     28 ON 24                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   0.5 INCH    5 = HAIL
                        GRTST 24HR   0.5 ON 21-21  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:  0            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:  19
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:  15
MIN 32 OR BELOW:   3    0.50 INCH OR MORE:   3
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.   633    CLEAR  (SCALE 0-3)   4
DPTR FM NORMAL  -122    PTCLDY (SCALE 4-7)  10
TOTAL FM JUL 1  1594    CLOUDY (SCALE 8-10) 17
DPTR FM NORMAL  -346

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   332    HIGHEST SLP 30.64 ON  1
DPTR FM NORMAL   143    LOWEST  SLP 29.51 ON 21

[REMARKS]
#FINAL-12-20#
CORRECTED


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.