Climatological Report (Daily)
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CDUS45 KTFX 181156
CLILWT


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
454 AM MST MON DEC 18 2017


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

...THE LEWISTOWN MT CLIMATE SUMMARY FOR DECEMBER 17 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1896 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         38    121 PM  65    1925  33      5        3
  MINIMUM         20    706 AM -30    1924  12      8      -29
  AVERAGE         29                        23      6      -13

PRECIPITATION (IN)
  YESTERDAY        0.00          0.28 1967   0.02  -0.02     0.00
  MONTH TO DATE    0.42                      0.35   0.07     0.17
  SINCE OCT 1      1.80                      2.19  -0.39     4.24
  SINCE JAN 1     12.41                     16.54  -4.13    20.27

SNOWFALL (IN)
  YESTERDAY       MM
  SNOW DEPTH       T

DEGREE DAYS
 HEATING
  YESTERDAY       36                        42     -6       78
  MONTH TO DATE  554                       697   -143      978
  SINCE DEC 1    554                       697   -143      978
  SINCE JUL 1   2528                      2825   -297     2704

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    375                       210    165      259
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    26   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED    16.1


SKY COVER
  AVERAGE SKY COVER 0.1


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    75          1200 AM
 LOWEST     52          1200 PM
 AVERAGE    64

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


THE LEWISTOWN MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   33        62      1979
 MINIMUM TEMPERATURE (F)   12       -37      1924


SUNRISE AND SUNSET
DECEMBER 18 2017......SUNRISE   759 AM MST   SUNSET   430 PM MST
DECEMBER 19 2017......SUNRISE   800 AM MST   SUNSET   430 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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