Climatological Report (Monthly)
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CXUS55 KTFX 020817
CLMHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
116 AM MST THU FEB 2 2017

...................................

...THE HELENA MT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1866 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              63   01/25/2015
                        01/07/1902
                        02/27/1932
 LOW              -42   01/25/1957
                        01/31/1893
HIGHEST            45   01/30        33      12       49  01/28
LOWEST            -16   01/05         9     -25       -6  01/03
                                                          01/02
AVG. MAXIMUM     20.7              33.3   -12.6     32.2
AVG. MINIMUM      1.8              13.0   -11.2     15.6
MEAN             11.2              23.1   -11.9     23.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     24              11.8    12.2       12
DAYS MIN <= 32     31              29.0     2.0       31
DAYS MIN <= 0      14               6.3     7.7        4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.75   1884
 MINIMUM            T   1987
TOTALS           0.62              0.36    0.26     0.31
DAYS >= .01         8               6.2     1.8
DAYS >= .10         2               1.1     0.9
DAYS >= .50         0               0.0     0.0
DAYS >= 1.00        0               0.0     0.0
GREATEST
 24 HR. TOTAL    0.18   01/07 TO 01/08

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
 24 HR TOTAL       MM
TOTALS           12.7               6.2     6.5      3.7
SINCE 7/1        37.8              22.3    15.5
SNOWDEPTH AVG.      6
DAYS >= TRACE      12               5.6     6.4
DAYS >= 1.0         6               2.2     3.8
GREATEST
 SNOW DEPTH         8   01/16
                        01/15
                        01/14
 24 HR TOTAL      4.4   MM

DEGREE_DAYS
HEATING TOTAL    1661              1297     364     1266
 SINCE 7/1       4678              4518     160     4161
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              3.1
HIGHEST WIND SPEED/DIRECTION    21/270    DATE  01/30
HIGHEST GUST SPEED/DIRECTION    27/270    DATE  01/30

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                0     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                1     SNOW                       3
LIGHT SNOW               12     SLEET                      0
FOG                      22     FOG W/VIS <= 1/4 MILE      2
HAZE                     24

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$



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