Climatological Report (Monthly)
Issued by NWS

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CXUS55 KTFX 011007
CLMGTF


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
238 AM MST MON JAN 1 2018

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

...THE GREAT FALLS MT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1886 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              69   12/05/1939
 LOW              -43   12/29/1968
HIGHEST            56   12/12        37      19       43
LOWEST            -26   12/31        12     -38      -26
AVG. MAXIMUM     29.4              34.6    -5.2     22.4
AVG. MINIMUM     12.8              14.9    -2.1      6.2
MEAN             21.1              24.8    -3.7     14.3
DAYS MAX >= 90      0               0.0     0.0
DAYS MAX <= 32     14              10.4     3.6
DAYS MIN <= 32     28              27.2     0.8
DAYS MIN <= 0      11               5.4     5.6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.49   1917
 MINIMUM            T   1954
TOTALS           1.31              0.55    0.76     0.89
DAYS >= .01         9               7.5     1.5
DAYS >= .10         5               1.8     3.2
DAYS >= .50         0               0.1    -0.1
DAYS >= 1.00        0               0.0     0.0
GREATEST
 24 HR. TOTAL    0.38   12/29 TO 12/29

SNOWFALL (INCHES)
RECORDS
 TOTAL           30.5   2008
 24 HR TOTAL     14.0   12/12/1932 TO 12/12/1932
TOTALS           20.7               9.5    11.2     15.8
SINCE 7/1        36.1              23.2    12.9     18.5
SNOWDEPTH AVG.      2
DAYS >= TRACE      17               7.5     9.5
DAYS >= 1.0         7               3.1     3.9
GREATEST
 SNOW DEPTH         8   12/31
                        12/30
 24 HR TOTAL      6.1   12/29 TO 12/29

DEGREE_DAYS
HEATING TOTAL    1354              1248     106     1565
 SINCE 7/1       3229              3217      12     3150
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        456               298     158      252
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              12.0
HIGHEST WIND SPEED/DIRECTION    41/230    DATE  12/17
HIGHEST GUST SPEED/DIRECTION    53/230    DATE  12/17

SKY COVER
AVERAGE SKY COVER           0.40

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW               17     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      1
HAZE                     10

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

$$



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