WFO Monthly/Daily Climate Data
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000
CXUS53 KLOT 231423
CF6ORD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   CHICAGO-OHARE
                                          MONTH:     APRIL
                                          YEAR:      2021
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 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  40  24  32 -12  33   0 0.00  0.0    0 11.6 21 360   M    M   2        31 340
 2  51  26  39  -6  26   0 0.00  0.0    0  8.8 17 220   M    M   1        28 160
 3  71  40  56  11   9   0 0.00  0.0    0 12.9 24 230   M    M   2        35 230
 4  76  43  60  14   5   0 0.00  0.0    0  5.8 18 150   M    M   3 8      25 150
 5  76  60  68  22   0   3    T  0.0    0 11.6 23 220   M    M   8        36 240
 6  81  59  70  24   0   5 0.00  0.0    0 10.8 22 210   M    M   7        35 210
 7  82  60  71  25   0   6    T  0.0    0 10.5 29 220   M    M   5        40 220
 8  69  52  61  14   4   0 0.36  0.0    0  9.2 23 220   M    M   9 18     33 210
 9  62  51  57  10   8   0    T  0.0    0 10.4 24 240   M    M   8 1      35 240
10  55  47  51   3  14   0 0.26  0.0    0  8.1 21  50   M    M   9 1      25  60
11  56  45  51   3  14   0 0.01  0.0    0  5.1 12 160   M    M   8 1      16 160
12  62  48  55   7  10   0    T  0.0    0 11.4 23 280   M    M   5 1      35 230
13  54  42  48  -1  17   0 0.00  0.0    0 11.5 23 240   M    M   3        32 260
14  51  36  44  -5  21   0 0.00  0.0    0 10.3 18 280   M    M   6        27 250
15  56  39  48  -1  17   0 0.00  0.0    0  9.0 18 320   M    M   7        26 310
16  57  38  48  -2  17   0 0.00  0.0    0  6.5 13  60   M    M   5        20  80
17  56  35  46  -4  19   0 0.00  0.0    0  7.2 16  30   M    M   5        22  30
18  62  39  51   1  14   0 0.00  0.0    0  5.7 15 250   M    M   6        24 240
19  52  40  46  -5  19   0    T  0.0    0 11.9 18 260   M    M   8        25 250
20  43  34  39 -12  26   0    T    T    0  6.3 15 330   M    M   9 18     21 320
21  50  33  42 -10  23   0    T  0.0    0  9.0 25 320   M    M   7 18     38 300
22  60  32  46  -6  19   0 0.00  0.0    0  9.1 18 270   M    M   2 8      28 240
23  62  43  53   1  12   0 0.00  0.0    0 10.6 20 240   M    M   7        27 180
24  64  44  54   1  11   0    T  0.0    0  4.9 23  30   M    M   9        27  40
25  47  39  43 -10  22   0 0.00  0.0    0 10.9 18  30   M    M   8        24  30
26  79  40  60   6   5   0 0.00  0.0    0 15.3 32 180   M    M   7        50 210
27  87  50  69  15   0   4 0.00  0.0    0 14.4 22 210   M    M   8        32 200
28  51  46  49  -5  16   0 0.04  0.0    0  9.2 15  60   M    M  10 18     19  60
29  71  48  60   5   5   0 0.04  0.0    0  9.5 36 300   M    M   7 1      57 310
30  56  42  49  -6  16   0 0.00  0.0    0 11.8 28  40   M    M   3        34  40
================================================================================
SM 1839 1275       402  18  0.71    T    289.3          M      184
================================================================================
AV 61.3 42.5                               9.6 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->    36 300                 57 310
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:   CHICAGO-OHARE
                                          MONTH:     APRIL
                                          YEAR:      2021
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 W

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

AVERAGE MONTHLY: 51.9   TOTAL FOR MONTH:   0.71    1 = FOG OR MIST
DPTR FM NORMAL:   2.2   DPTR FM NORMAL:   -3.04    2 = FOG REDUCING VISIBILITY
HIGHEST:    87 ON 27    GRTST 24HR  0.36 ON  8- 8      TO 1/4 MILE OR LESS
LOWEST:     24 ON  1                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:  T            5 = HAIL
                        GRTST 24HR   T   ON 20-20  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:   5
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   2
MIN 32 OR BELOW:   3    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   402    CLEAR  (SCALE 0-3)   7
DPTR FM NORMAL   -66    PTCLDY (SCALE 4-7)  17
TOTAL FM JUL 1  5380    CLOUDY (SCALE 8-10)  6
DPTR FM NORMAL  -365

[CDD (BASE 65) ]
TOTAL THIS MO.    18
DPTR FM NORMAL    10    [PRESSURE DATA]
TOTAL FM JAN 1    18    HIGHEST SLP 30.57 ON  2
DPTR FM NORMAL     8    LOWEST  SLP 29.29 ON 11

[REMARKS]
#FINAL-04-21#


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