WFO Monthly/Daily Climate Data
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CXUS56 KTFX 011210
CF6HLN
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   HELENA MT
                                          MONTH:     DECEMBER
                                          YEAR:      2021
                                          LATITUDE:   46 35 N
                                          LONGITUDE: 112  0 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  70  51  61  34   4   0 0.00  0.0    0 15.1 35 260   M    M   6        49 260
 2  64  46  55  28  10   0 0.00  0.0    0 12.5 31 290   M    M   1        43 300
 3  50  32  41  15  24   0 0.00  0.0    0  3.0 10 200   M    M   4        14 110
 4  50  31  41  15  24   0 0.02  0.0    0  7.5 29 250   M    M   8        41 230
 5  38  13  26   0  39   0 0.07    T    T  5.5 23 310   M    M   5 1      29 320
 6  27  10  19  -7  46   0 0.05  0.5    0  2.5  9 230   M    M   8 1      11 230
 7  47  21  34   9  31   0 0.00  0.0    1  5.2 21 260   M    M   9 1      26 270
 8  50  32  41  16  24   0    T    T    0 14.7 31 300   M    M   7 8      40 300
 9  34  24  29   4  36   0 0.00  0.0    0  6.9 22 290   M    M   5        33 300
10  34  15  25   1  40   0    T    T    0 10.0 31 270   M    M   4 8      43 270
11  47  29  38  14  27   0 0.00  0.0    0 15.6 32 190   M    M   4        53 180
12  50  29  40  16  25   0    T    T    0 14.7 25 210   M    M   6        48 190
13  43  26  35  11  30   0 0.05  0.7    1  3.4 12 110   M    M   7 12     19 150
14  52  32  42  19  23   0    T    T    0 11.0 30 190   M    M   6        49 180
15  32  12  22  -1  43   0 0.00  0.0    0 13.0 28 260   M    M   4        37 280
16  31   9  20  -3  45   0    T    T    0  2.6 28 360   M    M   6        34 360
17  16   0   8 -15  57   0 0.06  0.8    1  5.7 25 360   M    M   4 8      35 360
18  44   0  22   0  43   0 0.00  0.0    1  3.3 24 190   M    M   4        33 190
19  44  14  29   7  36   0 0.27  4.5    T  9.6 23 180   M    M   9 1      33 180
20  36  13  25   3  40   0 0.05  0.8    5  2.4 20 250   M    M   9 18     28 260
21  45  28  37  15  28   0 0.00  0.0    4  6.4 17 260   M    M   8        29 230
22  48  19  34  12  31   0 0.00  0.0    2  4.3 14 240   M    M   2        22 220
23  46  22  34  12  31   0 0.16    T    2  7.9 37 270   M    M   6 18     50 270
24  32  10  21  -1  44   0 0.00  0.0    1  4.1 15 340   M    M   1        17 350
25  17   5  11 -11  54   0    T  0.1    1  6.1 10 310   M    M   5        14 310
26   5  -9  -2 -24  67   0 0.07  1.6    1  8.7 15 300   M    M   8 8      19 290
27   1 -12  -5 -27  70   0 0.03  0.4    2  3.6 10 340   M    M   7 8      13 340
28  10 -11   0 -22  65   0 0.01    T    2  1.5 18 350   M    M  10 8      22 360
29   6  -6   0 -22  65   0 0.02  0.3    2  4.6 14 300   M    M   3 8      20 310
30  19  -4   8 -14  57   0 0.03  0.5    2  4.9 14 320   M    M   9 8      18 330
31   7  -7   0 -22  65   0 0.09  0.9    3  7.4 14 270   M    M   8 8      18 310
================================================================================
SM 1095  474      1224   0  0.98 11.1    223.7          M      183
================================================================================
AV 35.3 15.3                               7.2 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->    37 270                 53 180
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

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

                                          STATION:   HELENA MT
                                          MONTH:     DECEMBER
                                          YEAR:      2021
                                          LATITUDE:   46 35 N
                                          LONGITUDE: 112  0 W

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

AVERAGE MONTHLY: 25.3   TOTAL FOR MONTH:   0.98    1 = FOG OR MIST
DPTR FM NORMAL:   1.9   DPTR FM NORMAL:    0.52    2 = FOG REDUCING VISIBILITY
HIGHEST:    70 ON  1    GRTST 24HR  0.30 ON 19-20      TO 1/4 MILE OR LESS
LOWEST:    -12 ON 27                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:  11.1 INCHES  5 = HAIL
                        GRTST 24HR   4.5 ON 19-19  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   5 ON 20     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:  12    0.01 INCH OR MORE:  14
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   2
MIN 32 OR BELOW:  29    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   8    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.  1224    CLEAR  (SCALE 0-3)   3
DPTR FM NORMAL   -66    PTCLDY (SCALE 4-7)  23
TOTAL FM JUL 1  2533    CLOUDY (SCALE 8-10)  5
DPTR FM NORMAL  -597

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   781    HIGHEST SLP 30.58 ON 17
DPTR FM NORMAL   348    LOWEST  SLP 29.09 ON 23

[REMARKS]
#FINAL-12-21#


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