WFO Monthly/Daily Climate Data
Issued by NWS

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675
CXUS55 KBOU 061000
CF6BDU
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   BOULDER AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2025
                                          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  45  14  30  -6  35   0    M    M    M  3.8 17 270   M    M   0        23 270
 2  50  23  37   1  28   0    M    M    M  3.3 12 160   M    M   3        18 160
 3  34  19  27  -8  38   0    M    M    M  3.0  7  80   M    M  10 1       M   M
 4  41  10  26  -9  39   0    M    M    M  2.1 10 270   M    M   0 1      17 270
 5  39  25  32  -3  33   0    M    M    M  1.8  7  50   M    M   2         M   M
================================================================================
SM  209   91       173   0     M    M     13.9          M       15
================================================================================
AV 41.8 18.2                               2.8 FASTST   M    M   3    MAX(MPH)
                                 MISC ---->    17 270                 23 270
================================================================================
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:      2025
                                          LATITUDE:   40  2 N
                                          LONGITUDE: 105 14 W

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

AVERAGE MONTHLY: 30.0   TOTAL FOR MONTH:      M    1 = FOG OR MIST
DPTR FM NORMAL:  -5.4   DPTR FM NORMAL:       M    2 = FOG REDUCING VISIBILITY
HIGHEST:    50 ON  2    GRTST 24HR      M ON  M       TO 1/4 MILE OR LESS
LOWEST:     10 ON  4                               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:   0    0.01 INCH OR MORE:   0
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   0
MIN 32 OR BELOW:   5    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   173    CLEAR  (SCALE 0-3)   4
DPTR FM NORMAL    25    PTCLDY (SCALE 4-7)   0
TOTAL FM JUL 1  1071    CLOUDY (SCALE 8-10)  1
DPTR FM NORMAL   167

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   878    HIGHEST SLP M ON M
DPTR FM NORMAL   878    LOWEST  SLP M ON M

[REMARKS]