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CDUS45 KMSO 200739
CLIBTM


CLIMATE REPORT
NATIONAL WEATHER SERVICE MISSOULA, MT
1238 AM MST THU DEC 20 2012


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

...THE BUTTE MT CLIMATE SUMMARY FOR DECEMBER 19 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2012


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         21    333 PM  52    2004  29     -8       34
  MINIMUM         -9    837 AM -27    1945   4    -13       12
  AVERAGE          6                        17    -11       23

PRECIPITATION (IN)
  YESTERDAY        0.00          0.60 1925   0.01  -0.01     0.00
  MONTH TO DATE    0.24                      0.31  -0.07     0.05
  SINCE OCT 1      1.57                      1.69  -0.12     1.02
  SINCE JAN 1      9.00                     12.57  -3.57    11.59

SNOWFALL (IN)
  YESTERDAY       MM
  MONTH TO DATE   MM
  SINCE JAN 1     MM
  SINCE JUL 1     MM
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  YESTERDAY       59                        48     11       42
  MONTH TO DATE  808                       897    -89      915
  SINCE DEC 1    808                       897    -89      915
  SINCE JUL 1   3070                      3387   -317     3217

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    121                        81     40       48
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED     2.3


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    83           800 AM
 LOWEST     39           300 PM
 AVERAGE    61

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


THE BUTTE MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   29        49      1958
 MINIMUM TEMPERATURE (F)    5       -36      1998


SUNRISE AND SUNSET
DECEMBER 20 2012......SUNRISE   809 AM MST   SUNSET   447 PM MST
DECEMBER 21 2012......SUNRISE   809 AM MST   SUNSET   448 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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