WFO Monthly/Daily Climate Data
Issued by NWS Mt. Holly, NJ

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000
CXUS51 KPHI 150800
CF6ABE
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   ALLENTOWN PA
                                          MONTH:     DECEMBER
                                          YEAR:      2017
                                          LATITUDE:   40 39 N
                                          LONGITUDE:  75 26 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  53  29  41   4  24   0    T    M    0  4.8 14 330   M    M   2 1      19 320
 2  50  25  38   1  27   0 0.00  0.0    0  1.7  6 310   M    M   0         7  70
 3  48  27  38   2  27   0 0.00  0.0    0  0.8  6 220   M    M   4 18      7 210
 4  50  27  39   3  26   0 0.00  0.0    0  2.0  8 130   M    M   7 128    13 130
 5  57  47  52  16  13   0 0.22  0.0    0  8.2 17 200   M    M  10 1      23 170
 6  56  28  42   7  23   0    T  0.0    0  9.6 28 300   M    M   2 18     39 300
 7  45  24  35   0  30   0    T    T    0  8.7 21 260   M    M   5        27 240
 8  35  29  32  -2  33   0 0.00  0.0    0  5.5 12 250   M    M   1        16 270
 9  33  24  29  -5  36   0 0.31  4.9    0  3.5  9 260   M    M  10 18     13  80
10  38  14  26  -8  39   0 0.00  0.0    5  8.8 21 250   M    M   4 18     27 250
11  39  27  33  -1  32   0 0.00  0.0    2  6.5 16 250   M    M   7        21 240
12  42  21  32  -1  33   0    T  0.0    0  9.6 25 290   M    M   7        37 300
13  31  19  25  -8  40   0 0.06  0.3    0 13.8 31 280   M    M   4 1      46 290
14  31  15  23  -9  42   0 0.04  1.6    2  7.4 18 320   M    M   6 18     26 330
================================================================================
SM  608  356       425   0  0.63     6.8  90.9          M       69
================================================================================
AV 43.4 25.4                               6.5 FASTST   M    M   5    MAX(MPH)
                                 MISC ---->  # 31 280               # 46  290
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:  ALLENTOWN PA
                                          MONTH:    DECEMBER
                                          YEAR:     2017
                                          LATITUDE:   40 39 N
                                          LONGITUDE:  75 26 W

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

AVERAGE MONTHLY: 34.4   TOTAL FOR MONTH:   0.63    1 = FOG OR MIST
DPTR FM NORMAL:  -0.3   DPTR FM NORMAL:   -1.18    2 = FOG REDUCING VISIBILITY
HIGHEST:    57 ON  5    GRTST 24HR  0.31 ON  9- 9      TO 1/4 MILE OR LESS
LOWEST:     14 ON 10                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   6.8 INCHES  5 = HAIL
                        GRTST 24HR   4.9 ON  9- 9  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   5 ON 10     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:   2    0.01 INCH OR MORE:   4
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   2
MIN 32 OR BELOW:  13    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   425    CLEAR  (SCALE 0-3)   4
DPTR FM NORMAL     2    PTCLDY (SCALE 4-7)   8
TOTAL FM JUL 1  1338    CLOUDY (SCALE 8-10)  2
DPTR FM NORMAL  -265

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1  1004    HIGHEST SLP M ON M
DPTR FM NORMAL   247    LOWEST  SLP 29.45 ON 12

[REMARKS]



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