Climatological Report (Daily)
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CDUS45 KTFX 140828
CLIHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
128 AM MST THU DEC 14 2017


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

...THE HELENA MT CLIMATE SUMMARY FOR DECEMBER 13 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         31    301 PM  58    1924  31      0       14
  MINIMUM         13   1110 PM -22    1919  12      1       -4
  AVERAGE         22                        22      0        5

PRECIPITATION (IN)
  YESTERDAY        0.10          0.48 1917   0.01   0.09     0.07
  MONTH TO DATE    0.29                      0.18   0.11     0.53
  SINCE OCT 1      1.79                      1.35   0.44     2.23
  SINCE JAN 1      8.98                     11.00  -2.02     9.40

SNOWFALL (IN)
  YESTERDAY        1.0           9.8  1991   0.2    0.8      2.7
  MONTH TO DATE    3.1                       3.1    0.0     10.3
  SINCE DEC 1      3.1                       3.1    0.0     10.3
  SINCE JUL 1     11.9                      11.9    0.0     11.6
  SNOW DEPTH       T

DEGREE DAYS
 HEATING
  YESTERDAY       43                        43      0       60
  MONTH TO DATE  510                       542    -32      627
  SINCE DEC 1    510                       542    -32      627
  SINCE JUL 1   2391                      2424    -33     2102

 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    10   HIGHEST WIND DIRECTION     N (20)
  HIGHEST GUST SPEED    13   HIGHEST GUST DIRECTION     N (10)
  AVERAGE WIND SPEED     2.3


SKY COVER
  AVERAGE SKY COVER 0.6


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           400 PM
 LOWEST     74          1200 AM
 AVERAGE    87

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


THE HELENA MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        63      1924
 MINIMUM TEMPERATURE (F)   12       -20      1926


SUNRISE AND SUNSET
DECEMBER 14 2017......SUNRISE   805 AM MST   SUNSET   441 PM MST
DECEMBER 15 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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