WFO Monthly/Daily Climate Data
Issued by NWS Boston, MA

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CXUS51 KBOX 141200
CF6BOS
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   BOSTON MA
                                          MONTH:     DECEMBER
                                          YEAR:      2017
                                          LATITUDE:   42 22 N
                                          LONGITUDE:  71  2 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  51  38  45   5  20   0 0.09  0.0    M 10.2 21 330   M    M   7 1      25 350
 2  43  34  39   0  26   0 0.00  0.0    M  5.2 15 330   M    M   7        19 330
 3  44  34  39   0  26   0 0.00  0.0    M  4.9  8 320   M    M   8        12 330
 4  43  33  38  -1  27   0 0.00  0.0    M  7.1 12 120   M    M   4        14 110
 5  59  38  49  11  16   0 0.08  0.0    M 13.7 33 190   M    M  10 1      48 190
 6  58  36  47   9  18   0 0.46  0.0    M 14.1 38 200   M    M   8 1      46 190
 7  47  33  40   2  25   0 0.00  0.0    M 11.5 18 240   M    M   4        27 260
 8  39  31  35  -2  30   0 0.00  0.0    M  9.5 16 260   M    M   5        20 260
 9  37  31  34  -3  31   0 0.66  5.8    M  7.5 14 330   M    M  10 12     20 360
10  38  31  35  -2  30   0 0.01  0.3    M 12.2 22 260   M    M   7 1      28 270
11  39  32  36   0  29   0 0.00  0.0    M  9.4 18 270   M    M   8        24 280
12  46  33  40   4  25   0 0.04  0.0    M 11.4 22 270   M    M  10 1      31 280
13  36  22  29  -7  36   0 0.00  0.0    M 21.1 31 270   M    M   4        43 260
================================================================================
SM  580  426       339   0  1.34     6.1 137.8          M       92
================================================================================
AV 44.6 32.8                              10.6 FASTST   M    M   7    MAX(MPH)
                                 MISC ---->  # 38 200               # 48  190
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:  BOSTON MA
                                          MONTH:    DECEMBER
                                          YEAR:     2017
                                          LATITUDE:   42 22 N
                                          LONGITUDE:  71  2 W

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

AVERAGE MONTHLY: 38.7   TOTAL FOR MONTH:   1.34    1 = FOG OR MIST
DPTR FM NORMAL:   1.1   DPTR FM NORMAL:   -0.34    2 = FOG REDUCING VISIBILITY
HIGHEST:    59 ON  5    GRTST 24HR  0.66 ON  9- 9      TO 1/4 MILE OR LESS
LOWEST:     22 ON 13                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   6.1 INCHES  5 = HAIL
                        GRTST 24HR   5.8 ON  9- 9  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:   6
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   2
MIN 32 OR BELOW:   5    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   339    CLEAR  (SCALE 0-3)   0
DPTR FM NORMAL   -16    PTCLDY (SCALE 4-7)  10
TOTAL FM JUL 1  1166    CLOUDY (SCALE 8-10)  3
DPTR FM NORMAL  -244

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   880    HIGHEST SLP M ON M
DPTR FM NORMAL   133    LOWEST  SLP 29.21 ON 13

[REMARKS]



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