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000
CXUS55 KBOU 011000
CF6BDU
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   BOULDER AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2021
                                          LATITUDE:   40  2 N
                                          LONGITUDE: 105 14 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  72  41  57   M   8   0    M    M    M  8.7 17 260   M    M   0        28 250
 2  70  45  58   M   7   0    M    M    M  3.5 12 260   M    M   0         M   M
 3  61  36  49   M  16   0    M    M    M  4.2 12 330   M    M   0         M   M
 4  66  30  48   M  17   0    M    M    M  2.2 12 210   M    M   0        18 210
 5  64  23  44   M  21   0    M    M    M  7.2 15 300   M    M   4        35 300
 6  32  18  25   M  40   0    M    M    M  3.0  7 280   M    M   2        16   0
 7  55  27  41   M  24   0    M    M    M  4.9 31 270   M    M   0        38 270
 8  55  28  42   M  23   0    M    M    M  5.2 17 250   M    M   1        25 280
 9  50  34  42   M  23   0    M    M    M  5.3 21 250   M    M   2        31 250
10  36  27  32   M  33   0    M    M    M  7.6 20 270   M    M   4        32 280
11  50  21  36   M  29   0    M    M    M  3.7  9 260   M    M   0        24 240
12  64  32  48   M  17   0    M    M    M  8.5 23 230   M    M   0        33 250
13  55  30  43   M  22   0    M    M    M  2.4  6 340   M    M   0         M   M
14  61  32  47   M  18   0    M    M    M  2.3  6 280   M    M   0         M   M
15  54  34  44   M  21   0    M    M    M 12.9 30 250   M    M   1        52 260
16  45  30  38   M  27   0    M    M    M 10.1 29 260   M    M   0        44 260
17  43  19  31   M  34   0    M    M    M  7.5 18 250   M    M   2        29 250
18  37  12  25   M  40   0    M    M    M  1.0  5 170   M    M   0         M   M
19  61  21  41   M  24   0    M    M    M  4.2  9 320   M    M   0        16 320
20  61  28  45   M  20   0    M    M    M  6.4 16 230   M    M   0        23 220
21  63  28  46   M  19   0    M    M    M  6.3 21 340   M    M   0        31  50
22  63  37  50   M  15   0    M    M    M  6.4 18 220   M    M   0        24 220
23  61  45  53   M  12   0    M    M    M 11.8 24 250   M    M   0        39 240
24  54  36  45   M  20   0    M    M    M  4.0 10 250   M    M   4        17 170
25  54  34  44   M  21   0    M    M    M  8.5 23 260   M    M   4        33 260
26  50  25  38   M  27   0    M    M    M  8.0 21 230   M    M   4        36 230
27  43  23  33   M  32   0    M    M    M  4.3 13 260   M    M   3        20 250
28  37  21  29   M  36   0    M    M    M  6.6 12 110   M    M   1        22 110
29  34  14  24   M  41   0    M    M    M  2.5  8 120   M    M   1         M   M
30  45  16  31   M  34   0    M    M    M 19.4 46 250   M    M   1        73 240
31  45  16  31   M  34   0    M    M    M  7.0 21 250   M    M   6        32 250
================================================================================
SM 1641  863       755   0     M    M    195.4          M       40
================================================================================
AV 52.9 27.8                               6.3 FASTST   M    M   1    MAX(MPH)
                                 MISC ---->    46 250                 73 240
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:   BOULDER AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2021
                                          LATITUDE:   40  2 N
                                          LONGITUDE: 105 14 W

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

AVERAGE MONTHLY: 40.4   TOTAL FOR MONTH:      M    1 = FOG OR MIST
DPTR FM NORMAL:   0.0   DPTR FM NORMAL:       M    2 = FOG REDUCING VISIBILITY
HIGHEST:    72 ON  1    GRTST 24HR      M ON  M       TO 1/4 MILE OR LESS
LOWEST:     12 ON 18                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:  M            5 = HAIL
                        GRTST 24HR    M  ON   M    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:   1    0.01 INCH OR MORE:   0
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   0
MIN 32 OR BELOW:  22    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   755    CLEAR  (SCALE 0-3)  25
DPTR FM NORMAL     M    PTCLDY (SCALE 4-7)   6
TOTAL FM JUL 1  1674    CLOUDY (SCALE 8-10)  0
DPTR FM NORMAL     M

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     M    [PRESSURE DATA]
TOTAL FM JAN 1   947    HIGHEST SLP M ON M
DPTR FM NORMAL     M    LOWEST  SLP M ON M

[REMARKS]
#FINAL-12-21#