Climatological Report (Daily)
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CDUS45 KTFX 151024
CLIHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
322 AM MST FRI DEC 15 2017


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

...THE HELENA MT CLIMATE SUMMARY FOR DECEMBER 14 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         27    323 PM  63    1924  31     -4        6
  MINIMUM         11    354 AM -20    1926  12     -1       -9
  AVERAGE         19                        21     -2       -1

PRECIPITATION (IN)
  YESTERDAY        T             0.25 2015   0.01  -0.01     0.00
  MONTH TO DATE    0.29                      0.19   0.10     0.53
  SINCE OCT 1      1.79                      1.36   0.43     2.23
  SINCE JAN 1      8.98                     11.01  -2.03     9.40

SNOWFALL (IN)
  YESTERDAY        T             4.0  2015   0.3   -0.3      0.0
  MONTH TO DATE    3.1                       3.4   -0.3     10.3
  SINCE DEC 1      3.1                       3.4   -0.3     10.3
  SINCE JUL 1     11.9                      12.2   -0.3     11.6
  SNOW DEPTH       1

DEGREE DAYS
 HEATING
  YESTERDAY       46                        44      2       66
  MONTH TO DATE  556                       586    -30      693
  SINCE DEC 1    556                       586    -30      693
  SINCE JUL 1   2437                      2468    -31     2168

 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    15   HIGHEST WIND DIRECTION     E (100)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     E (100)
  AVERAGE WIND SPEED     3.4


SKY COVER
  AVERAGE SKY COVER 0.8


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           200 AM
 LOWEST     84           300 PM
 AVERAGE    92

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


THE HELENA MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        57      1980
 MINIMUM TEMPERATURE (F)   11       -25      1924


SUNRISE AND SUNSET
DECEMBER 15 2017......SUNRISE   806 AM MST   SUNSET   441 PM MST
DECEMBER 16 2017......SUNRISE   806 AM MST   SUNSET   441 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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