WFO Monthly/Daily Climate Data
Issued by NWS Chicago, IL

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000
CXUS55 KLOT 130700
CF6RFD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   ROCKFORD IL
                                          MONTH:     DECEMBER
                                          YEAR:      2017
                                          LATITUDE:   42 12 N
                                          LONGITUDE:  89  6 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  23  38   7  27   0 0.00  0.0    0  4.4 12 200   M    M   4        15 210
 2  54  27  41  11  24   0 0.00  0.0    0  3.2  8 160   M    M   5        12 200
 3  57  24  41  11  24   0 0.00  0.0    0  7.3 20 180   M    M   5 1      24 180
 4  62  40  51  22  14   0    T  0.0    0 19.7 35 260   M    M  10        56 260
 5  40  24  32   3  33   0 0.00  0.0    0 20.8 37 300   M    M   4        47 290
 6  34  22  28   0  37   0    T    T    0 14.3 24 260   M    M   3        30 260
 7  28  16  22  -6  43   0    T  0.2    T 11.4 21 290   M    M   5 1      25 280
 8  36  15  26  -2  39   0    T    T    0  9.1 16 270   M    M   4        22 260
 9  33  17  25  -2  40   0 0.02  0.2    0 13.3 26 340   M    M   8 1      36 360
10  33  19  26  -1  39   0 0.00  0.0    0  8.2 17 330   M    M   7 18     22 330
11  38  18  28   2  37   0 0.09  1.1    0  9.2 29 350   M    M   9 18     36 340
12  28  13  21  -5  44   0    T    T    1 10.6 24 350   M    M   7        31 350
================================================================================
SM  496  258       401   0  0.11     1.5 131.5          M       71
================================================================================
AV 41.3 21.5                              11.0 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 37 300               # 56  260
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:  ROCKFORD IL
                                          MONTH:    DECEMBER
                                          YEAR:     2017
                                          LATITUDE:   42 12 N
                                          LONGITUDE:  89  6 W

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

AVERAGE MONTHLY: 31.4   TOTAL FOR MONTH:   0.11    1 = FOG OR MIST
DPTR FM NORMAL:   3.2   DPTR FM NORMAL:   -0.78    2 = FOG REDUCING VISIBILITY
HIGHEST:    62 ON  4    GRTST 24HR  0.09 ON 11-11      TO 1/4 MILE OR LESS
LOWEST:     13 ON 12                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   1.5 INCHES  5 = HAIL
                        GRTST 24HR   1.1 ON 11-11  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   1 ON 12     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:   2
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   0
MIN 32 OR BELOW:  11    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   401    CLEAR  (SCALE 0-3)   0
DPTR FM NORMAL   -38    PTCLDY (SCALE 4-7)  10
TOTAL FM JUL 1  1615    CLOUDY (SCALE 8-10)  2
DPTR FM NORMAL  -159

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   828    HIGHEST SLP M ON M
DPTR FM NORMAL     8    LOWEST  SLP 29.44 ON  4

[REMARKS]


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