Climatological Report (Daily)
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CDUS45 KTFX 110804
CLIHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
103 AM MST MON DEC 11 2017


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

...THE HELENA MT CLIMATE SUMMARY FOR DECEMBER 10 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         33    241 PM  63    1939  32      1       31
  MINIMUM         12    806 AM -27    1972  13     -1        6
  AVERAGE         23                        22      1       19

PRECIPITATION (IN)
  YESTERDAY        0.00          0.51 1929   0.01  -0.01      T
  MONTH TO DATE    0.19                      0.14   0.05     0.19
  SINCE OCT 1      1.69                      1.31   0.38     1.89
  SINCE JAN 1      8.88                     10.96  -2.08     9.06

SNOWFALL (IN)
  YESTERDAY        0.0           3.2  1929   0.3   -0.3       T
  MONTH TO DATE    2.1                       2.4   -0.3      1.7
  SINCE DEC 1      2.1                       2.4   -0.3      1.7
  SINCE JUL 1     10.9                      11.2   -0.3      3.0
  SNOW DEPTH       1

DEGREE DAYS
 HEATING
  YESTERDAY       42                        43     -1       46
  MONTH TO DATE  380                       413    -33      461
  SINCE DEC 1    380                       413    -33      461
  SINCE JUL 1   2261                      2295    -34     1936

 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    20   HIGHEST WIND DIRECTION    NE (50)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    NE (50)
  AVERAGE WIND SPEED     2.8


SKY COVER
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           500 AM
 LOWEST     69           200 PM
 AVERAGE    83

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


THE HELENA MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        59      2004
 MINIMUM TEMPERATURE (F)   12       -22      1961
                                             1922


SUNRISE AND SUNSET
DECEMBER 11 2017......SUNRISE   802 AM MST   SUNSET   440 PM MST
DECEMBER 12 2017......SUNRISE   803 AM MST   SUNSET   440 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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