Climatological Report (Daily)
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000
CDUS45 KTFX 160927
CLIHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
223 AM MST SAT DEC 16 2017


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

...THE HELENA MT CLIMATE SUMMARY FOR DECEMBER 15 2017...

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


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         35    757 PM  57    1980  31      4       15
  MINIMUM         16    927 AM -25    1924  11      5        4
  AVERAGE         26                        21      5       10

PRECIPITATION (IN)
  YESTERDAY        T             0.45 2016   0.02  -0.02     0.45
  MONTH TO DATE    0.29                      0.21   0.08     0.98
  SINCE OCT 1      1.79                      1.38   0.41     2.68
  SINCE JAN 1      8.98                     11.03  -2.05     9.85

SNOWFALL (IN)
  YESTERDAY        T             6.0  2016   0.2   -0.2      6.0
  MONTH TO DATE    3.1                       3.6   -0.5     16.3
  SINCE DEC 1      3.1                       3.6   -0.5     16.3
  SINCE JUL 1     11.9                      12.4   -0.5     17.6
  SNOW DEPTH       1

DEGREE DAYS
 HEATING
  YESTERDAY       39                        44     -5       55
  MONTH TO DATE  595                       630    -35      748
  SINCE DEC 1    595                       630    -35      748
  SINCE JUL 1   2476                      2512    -36     2223

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    702                       406    296      455
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     N (20)
  AVERAGE WIND SPEED     3.1


SKY COVER
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW
  FOG
  FOG W/VISIBILITY <= 1/4 MILE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100          1200 AM
 LOWEST     78           300 PM
 AVERAGE    89

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


THE HELENA MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        60      1942
 MINIMUM TEMPERATURE (F)   11       -36      1964


SUNRISE AND SUNSET
DECEMBER 16 2017......SUNRISE   806 AM MST   SUNSET   441 PM MST
DECEMBER 17 2017......SUNRISE   807 AM MST   SUNSET   442 PM MST


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




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