Climatological Report (Daily)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
CDUS45 KTFX 181156
CLIHLN


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


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

...THE HELENA MT CLIMATE SUMMARY FOR DECEMBER 17 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         36    432 PM  58    1998  31      5       -9
  MINIMUM         19    236 AM -38    1964  11      8      -28
  AVERAGE         28                        21      7      -18

PRECIPITATION (IN)
  YESTERDAY        T             0.17 1955   0.01  -0.01     0.00
  MONTH TO DATE    0.30                      0.23   0.07     0.99
  SINCE OCT 1      1.80                      1.40   0.40     2.69
  SINCE JAN 1      8.99                     11.05  -2.06     9.86

SNOWFALL (IN)
  YESTERDAY        T             2.8  1955   0.2   -0.2      0.0
  MONTH TO DATE    3.1                       4.1   -1.0     16.9
  SINCE DEC 1      3.1                       4.1   -1.0     16.9
  SINCE JUL 1     11.9                      12.9   -1.0     18.2
  SNOW DEPTH       1

DEGREE DAYS
 HEATING
  YESTERDAY       37                        44     -7       83
  MONTH TO DATE  668                       718    -50      902
  SINCE DEC 1    668                       718    -50      902
  SINCE JUL 1   2549                      2600    -51     2377

 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    25   HIGHEST WIND DIRECTION    NW (300)
  HIGHEST GUST SPEED    34   HIGHEST GUST DIRECTION     W (280)
  AVERAGE WIND SPEED     9.3


SKY COVER
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    81           900 PM
 LOWEST     47           800 AM
 AVERAGE    64

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


THE HELENA MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   31        59      1917
 MINIMUM TEMPERATURE (F)   11       -30      1924


SUNRISE AND SUNSET
DECEMBER 18 2017......SUNRISE   808 AM MST   SUNSET   442 PM MST
DECEMBER 19 2017......SUNRISE   808 AM MST   SUNSET   442 PM MST


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




$$




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.