WFO Monthly/Daily Climate Data
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CXUS56 KTFX 011110
CF6HLN
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   HELENA MT
                                          MONTH:     MAY
                                          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  74  54  64  15   1   0 0.00  0.0    0 13.4 30 340   M    M   1        38 320
 2  54  39  47  -3  18   0 0.04  0.0    0 10.6 23  10   M    M   7        31 310
 3  62  32  47  -3  18   0 0.00  0.0    0  5.5 22 270   M    M   2        28 260
 4  64  45  55   5  10   0 0.00  0.0    0 12.4 26 280   M    M   7        34 280
 5  67  39  53   3  12   0 0.00  0.0    0  6.1 14 320   M    M   3        21 310
 6  78  36  57   6   8   0 0.00  0.0    0  5.1 13  60   M    M   0        19  50
 7  65  43  54   3  11   0 0.11  0.0    0  8.9 26 280   M    M   7        36 270
 8  51  39  45  -7  20   0 0.00  0.0    0 18.4 31 280   M    M   8        46 280
 9  50  39  45  -7  20   0 0.05  0.0    0  7.5 21 270   M    M   9        30 280
10  57  36  47  -5  18   0 0.00  0.0    0  4.7 10 250   M    M   9        12 360
11  63  33  48  -5  17   0 0.03  0.0    0  6.9 28 280   M    M   3 8      37 280
12  67  34  51  -2  14   0 0.00  0.0    0  4.3 15 100   M    M   2        21  80
13  73  46  60   7   5   0 0.00  0.0    0  7.4 23 280   M    M   6        34 310
14  72  46  59   5   6   0    T  0.0    0  6.8 26 290   M    M   2 3      34 290
15  75  41  58   4   7   0 0.00  0.0    0  3.8 22 350   M    M   1        29 360
16  80  43  62   8   3   0 0.00  0.0    0  2.1 12  40   M    M   0        17  30
17  86  43  65  11   0   0 0.00  0.0    0  3.2 16 290   M    M   0        24 290
18  75  49  62   7   3   0 0.00  0.0    0 12.1 31 280   M    M   0        44 270
19  56  37  47  -8  18   0 0.14  0.0    0  9.5 21 350   M    M   7        29 310
20  39  28  34 -21  31   0 0.64  0.8    0  9.4 18 280   M    M  10 128    23 270
21  33  27  30 -26  35   0 0.44  7.0    2  9.1 16 340   M    M  10 12     21 340
22  43  29  36 -20  29   0 0.00  0.0    6  6.6 12 270   M    M  10        16 320
23  46  33  40 -16  25   0 0.44  0.2    0  5.4 13 270   M    M  10 1      17 190
24  62  42  52  -4  13   0 0.00  0.0    0 10.5 26 280   M    M   7        38 290
25  68  49  59   2   6   0 0.26  0.0    0  6.3 20 240   M    M   8 1      27 230
26  56  45  51  -6  14   0 0.11  0.0    0  6.9 16 340   M    M   9        21 330
27  77  38  58   1   7   0 0.00  0.0    0  5.0 17 160   M    M   1 12     26 180
28  65  47  56  -1   9   0 0.00  0.0    0 14.0 26 300   M    M   1        44 260
29  68  39  54  -4  11   0 0.00  0.0    0  4.1 14 240   M    M   1        19 250
30  76  39  58   0   7   0 0.00  0.0    0  3.7 12  40   M    M   0        15  30
31  82  44  63   5   2   0 0.00  0.0    0  5.6 20 290   M    M   1        31 280
================================================================================
SM 1984 1234       398   0  2.26  8.0    235.3          M      142
================================================================================
AV 64.0 39.8                               7.6 FASTST   M    M   5    MAX(MPH)
                                 MISC ---->  # 31 280                 46 280
================================================================================
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:     MAY
                                          YEAR:      2021
                                          LATITUDE:   46 35 N
                                          LONGITUDE: 112  0 W

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

AVERAGE MONTHLY: 51.9   TOTAL FOR MONTH:   2.26    1 = FOG OR MIST
DPTR FM NORMAL:  -2.0   DPTR FM NORMAL:    0.31    2 = FOG REDUCING VISIBILITY
HIGHEST:    86 ON 17    GRTST 24HR  0.74 ON 19-20      TO 1/4 MILE OR LESS
LOWEST:     27 ON 21                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   8.0 INCHES  5 = HAIL
                        GRTST 24HR   7.0 ON 21-21  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   6 ON 22     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:  10
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   7
MIN 32 OR BELOW:   4    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   398    CLEAR  (SCALE 0-3)  15
DPTR FM NORMAL    48    PTCLDY (SCALE 4-7)   9
TOTAL FM JUL 1  6935    CLOUDY (SCALE 8-10)  7
DPTR FM NORMAL  -422

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL    -7    [PRESSURE DATA]
TOTAL FM JAN 1     0    HIGHEST SLP 30.42 ON 21
DPTR FM NORMAL    -7    LOWEST  SLP 29.67 ON 17

[REMARKS]
#FINAL-05-21#


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