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

                                          STATION:   BOULDER AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2020
                                          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  43  30  37   M  28   0 0.00    M    M  5.7 18 350   M    M   6        29 350
 2  34  19  27   M  38   0 0.00    M    M  2.7  7 220   M    M   0         M   M
 3  50  23  37   M  28   0 0.00    M    M  2.5  7 220   M    M   0         M   M
 4  61  30  46   M  19   0 0.00    M    M  1.8  6 280   M    M   0         M   M
 5  54  30  42   M  23   0 0.00    M    M  3.5  7 100   M    M   0         M   M
 6  61  30  46   M  19   0 0.00    M    M  1.7  8 210   M    M   0         M   M
 7  61  32  47   M  18   0 0.00    M    M  3.1  9 230   M    M   0         M   M
 8  59  32  46   M  19   0 0.00    M    M  2.9  6 220   M    M   0 8       M   M
 9  63  34  49   M  16   0 0.00    M    M  1.5  7 280   M    M   0         M   M
10  46  28  37   M  28   0 0.03    M    M  2.7 10  60   M    M   4         M   M
11  28  21  25   M  40   0 0.02    M    M  2.1  8  10   M    M   9         M   M
12  25  19  22   M  43   0 0.00    M    M  2.7 10 350   M    M  10         M   M
13  32  14  23   M  42   0 0.00    M    M  2.6  7 360   M    M   1         M   M
14  36  12  24   M  41   0 0.00    M    M  2.4  8  60   M    M   5         M   M
15  34  19  27   M  38   0 0.00    M    M  1.3  8 160   M    M   5         M   M
16  45  19  32   M  33   0 0.00    M    M  5.5 16 230   M    M   0 8      30 320
17  43  23  33   M  32   0 0.00    M    M  3.5 13 260   M    M   0        16 300
18  41  25  33   M  32   0 0.00    M    M  2.9  7 260   M    M   5         M   M
19  46  19  33   M  32   0 0.00    M    M  6.3 28 310   M    M   0        39 310
20  52  30  41   M  24   0 0.00    M    M  6.8 18 250   M    M   0        30 260
21  57  36  47   M  18   0 0.00    M    M 14.0 29 260   M    M   0        36 260
22  63  32  48   M  17   0 0.00    M    M 10.1 33 270   M    M   1        61 270
23  32  19  26   M  39   0 0.00    M    M  8.7 25 310   M    M   2        36 310
24  54  28  41   M  24   0 0.00    M    M  9.6 25 260   M    M   0        31 260
25  55  30  43   M  22   0 0.00    M    M  1.5  9 230   M    M   0         M   M
26  63  34  49   M  16   0 0.00    M    M  7.0 20 260   M    M   1        31 280
27  46  30  38   M  27   0 0.00    M    M  8.8 18 270   M    M   1        33 270
28  32  28  30   M  35   0 0.04    M    M  1.2  6 360   M    M  10         M   M
29  36  23  30   M  35   0 0.00    M    M  2.0  6 150   M    M   4 1       M   M
30  36  14  25   M  40   0 0.00    M    M  2.0  7  20   M    M   0         M   M
31  43  21  32   M  33   0 0.00    M    M  1.4  5 360   M    M   4         M   M
================================================================================
SM 1431  784       899   0  0.09    M    130.6          M       68
================================================================================
AV 46.2 25.3                               4.2 FASTST   M    M   2    MAX(MPH)
                                 MISC ---->    33 270                 61 270
================================================================================
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:      2020
                                          LATITUDE:   40  2 N
                                          LONGITUDE: 105 14 W

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

AVERAGE MONTHLY: 35.7   TOTAL FOR MONTH:   0.09    1 = FOG OR MIST
DPTR FM NORMAL:   0.0   DPTR FM NORMAL:       M    2 = FOG REDUCING VISIBILITY
HIGHEST:    63 ON 26,22  GRTST 24HR  0.04 ON 28-28      TO 1/4 MILE OR LESS
LOWEST:     12 ON 14                               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:   5    0.01 INCH OR MORE:   3
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   0
MIN 32 OR BELOW:  28    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   899    CLEAR  (SCALE 0-3)  21
DPTR FM NORMAL     M    PTCLDY (SCALE 4-7)   7
TOTAL FM JUL 1  2099    CLOUDY (SCALE 8-10)  3
DPTR FM NORMAL     M

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     M    [PRESSURE DATA]
TOTAL FM JAN 1   992    HIGHEST SLP M ON M
DPTR FM NORMAL     M    LOWEST  SLP M ON M

[REMARKS]
#FINAL-12-20#