Climatological Report (Daily)
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CDUS45 KTFX 211017
CLIHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
316 AM MST SUN DEC 21 2014


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

...THE HELENA MT CLIMATE SUMMARY FOR DECEMBER 20 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1866 TO 2014


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         40    336 PM  55    1900  31      9       20
  MINIMUM         27    853 AM -25    1990  11     16        4
  AVERAGE         34                        21     13       12

PRECIPITATION (IN)
  YESTERDAY        0.00          0.21 1964   0.02  -0.02     0.03
  MONTH TO DATE    0.34                      0.27   0.07     0.24
  SINCE OCT 1      1.81                      1.44   0.37     0.95
  SINCE JAN 1     11.77                     11.09   0.68    10.53

SNOWFALL (IN)
  YESTERDAY        0.0           2.9  1964   0.2   -0.2      0.3
  MONTH TO DATE    0.9                       4.8   -3.9      0.9
  SINCE DEC 1      0.9                       4.8   -3.9      0.9
  SINCE JUL 1     11.7                      13.6   -1.9      4.4
  SNOW DEPTH       T

DEGREE DAYS
 HEATING
  YESTERDAY       31                        44    -13       53
  MONTH TO DATE  709                       850   -141      910
  SINCE DEC 1    709                       850   -141      910
  SINCE JUL 1   2421                      2732   -311     2701

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    469                       406     63      589
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    SW (240)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     W (250)
  AVERAGE WIND SPEED     3.5


SKY COVER
  AVERAGE SKY COVER 0.6


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    82           900 PM
 LOWEST     52           600 AM
 AVERAGE    67

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


THE HELENA MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        60      1933
 MINIMUM TEMPERATURE (F)   11       -32      1990


SUNRISE AND SUNSET
DECEMBER 21 2014......SUNRISE   809 AM MST   SUNSET   443 PM MST
DECEMBER 22 2014......SUNRISE   810 AM MST   SUNSET   444 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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