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000
CXUS55 KBOU 010900
CF6BDU
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   BOULDER AIRPORT
                                          MONTH:     SEPTEMBER
                                          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  84  61  73   M   0   8 0.00    M    M  3.5 14 260   M    M   3         M   M
 2  79  61  70   M   0   5 0.00    M    M  4.1 10 240   M    M   7        16 240
 3  81  61  71   M   0   6 0.01    M    M  3.9 13 350   M    M   4         M   M
 4  86  54  70   M   0   5 0.00    M    M  3.4  7  50   M    M   0         M   M
 5  86  59  73   M   0   8 0.00    M    M  4.5  9  40   M    M   0         M   M
 6  95  55  75   M   0  10 0.00    M    M  4.3 12 110   M    M   0        16 110
 7  84  55  70   M   0   5 0.00    M    M  3.4  7  60   M    M   0         M   M
 8  86  52  69   M   0   4 0.00    M    M  2.2  7  30   M    M   0         M   M
 9  95  52  74   M   0   9 0.00    M    M  2.7  8  70   M    M   0         M   M
10  99  57  78   M   0  13 0.00    M    M  2.8  8  60   M    M   0        16  80
11  95  63  79   M   0  14 0.02    M    M  4.1 14 170   M    M   0        23 130
12  82  61  72   M   0   7 0.00    M    M  3.4  8 320   M    M   2         M   M
13  84  55  70   M   0   5 0.00    M    M  2.9 10 200   M    M   2        16 200
14  73  55  64   M   1   0 0.00    M    M  5.4 14 360   M    M   1        20 360
15  90  50  70   M   0   5 0.00    M    M  2.8  7 230   M    M   0 8       9 110
16  91  61  76   M   0  11 0.00    M    M  4.6 12 240   M    M   0        22   0
17  70  46  58   M   7   0 0.00    M    M  4.1 16 360   M    M   2        26 360
18  90  46  68   M   0   3 0.00    M    M  2.3  9 290   M    M   0 8      29   0
19  86  61  74   M   0   9 0.00    M    M 10.0 21 250   M    M   1        37 250
20  68  46  57   M   8   0 0.04    M    M  7.1 20 300   M    M   5        28 300
21  64  41  53   M  12   0 0.02    M    M  2.6  6  80   M    M   1         M   M
22  81  43  62   M   3   0 0.00    M    M  3.4  8 150   M    M   0         M   M
23  81  52  67   M   0   2 0.00    M    M  3.1  8 300   M    M   1        23 320
24  72  50  61   M   4   0 0.00    M    M  4.0 12 360   M    M   0         M   M
25  86  46  66   M   0   1 0.00    M    M  2.6  7 110   M    M   0         M   M
26  88  55  72   M   0   7 0.00    M    M  4.0  8  60   M    M   0         M   M
27  90  55  73   M   0   8 0.00    M    M  2.0  7  70   M    M   0         M   M
28  82  59  71   M   0   6 0.00    M    M  4.6 15 230   M    M   1        25 100
29  70  45  58   M   7   0 0.22    M    M  4.7 14  50   M    M   7        18  70
30  54  45  50   M  15   0 0.03    M    M  1.6  7 220   M    M  10         M   M
================================================================================
SM 2472 1602        57 151  0.34    M    113.8          M       47
================================================================================
AV 82.4 53.4                               3.8 FASTST   M    M   2    MAX(MPH)
                                 MISC ---->    21 250                 37 250
================================================================================
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:     SEPTEMBER
                                          YEAR:      2021
                                          LATITUDE:   40  2 N
                                          LONGITUDE: 105 14 W

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

AVERAGE MONTHLY: 67.9   TOTAL FOR MONTH:   0.34    1 = FOG OR MIST
DPTR FM NORMAL:   0.0   DPTR FM NORMAL:       M    2 = FOG REDUCING VISIBILITY
HIGHEST:    99 ON 10    GRTST 24HR  0.22 ON 29-29      TO 1/4 MILE OR LESS
LOWEST:     41 ON 21                               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:   6
MAX 90 OR ABOVE:   8    0.10 INCH OR MORE:   1
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.    57    CLEAR  (SCALE 0-3)  25
DPTR FM NORMAL     M    PTCLDY (SCALE 4-7)   4
TOTAL FM JUL 1    57    CLOUDY (SCALE 8-10)  1
DPTR FM NORMAL     M

[CDD (BASE 65) ]
TOTAL THIS MO.   151
DPTR FM NORMAL     M    [PRESSURE DATA]
TOTAL FM JAN 1   945    HIGHEST SLP M ON M
DPTR FM NORMAL     M    LOWEST  SLP M ON M

[REMARKS]
#FINAL-09-21#