Climatological Report (Monthly)
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CXUS55 KTFX 011659
CLMGTF


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
931 AM MST SUN FEB 1 2015

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

...THE GREAT FALLS MT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1886 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              67   01/26/2015
                        01/31/1992
                        01/31/1892
 LOW              -44   01/10/1909
HIGHEST            67R  01/26        33      34       58
LOWEST            -18   01/09        11     -29      -21
AVG. MAXIMUM     37.0              35.5     1.5     41.1
AVG. MINIMUM     16.7              14.9     1.8     17.7
MEAN             26.9              25.2     1.7     29.4
DAYS MAX >= 90      0               0.0     0.0
DAYS MAX <= 32      8               9.6    -1.6
DAYS MIN <= 32     26              26.7    -0.7
DAYS MIN <= 0       8               6.4     1.6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.05   1969
 MINIMUM            T   1944
TOTALS           1.01              0.51    0.50     1.29
DAYS >= .01         8               6.8     1.2
DAYS >= .10         5               1.7     3.3
DAYS >= .50         0               0.1    -0.1
DAYS >= 1.00        0               0.0     0.0
GREATEST
 24 HR. TOTAL    0.37   01/05 TO 01/05
                        01/04 TO 01/05
                        01/05 TO 01/05

SNOWFALL (INCHES)
RECORDS
 TOTAL           24.0   1913
 24 HR TOTAL      9.6   01/21/1943 TO 01/21/1943
TOTALS           16.9               8.6     8.3     19.1
SINCE 7/1        50.5              31.8    18.7     42.0
SNOWDEPTH AVG.      6
DAYS >= TRACE      10               7.2     2.8
DAYS >= 1.0         6               3.0     3.0
GREATEST
 SNOW DEPTH        12   01/09
                        01/06
 24 HR TOTAL      4.1   MM

DEGREE_DAYS
HEATING TOTAL    1175              1234     -59     1097
 SINCE 7/1       4192              4451    -259     4251
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              13.3
HIGHEST WIND SPEED/DIRECTION    43/230    DATE  01/16
HIGHEST GUST SPEED/DIRECTION    49/230    DATE  01/16

SKY COVER
AVERAGE SKY COVER           0.30

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                2     SNOW                       4
LIGHT SNOW                9     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      5
HAZE                      4

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

&&

SUMMARY...GREAT FALLS WAS 1.7 DEGREES WARMER THAN AVERAGE AND
RECEIVED JUST OVER DOUBLE ITS MONTHLY AVERAGE PRECIPITATION DURING
JANUARY. THESE AVERAGES OBSCURE LARGE DEPARTURES FROM NORMAL THAT
OCCURRED THROUGHOUT THE MONTH. A LARGE SCALE RIDGE OVER THE PACIFIC
NORTHWEST ESTABLISHED A NORTHWEST FLOW OVER MONTANA THROUGH THE
FIRST THIRD OF THE MONTH. THIS PATTERN MAINTAINED COLD AND SNOWY
CONDITIONS THROUGH THE PERIOD. 0.37 INCHES OF PRECIPITATION ON THE
5TH AND 3.4 INCHES SNOWFALL ON THE 8TH SET NEW DAILY RECORDS. SNOW
DEPTH IN GREAT FALLS REACHED UP TO 12 INCHES. THE RIDGE BROKE DOWN
THROUGH THE MIDDLE OF JANUARY WITH LITTLE PRECIPITATION AND SLIGHTLY
WARMER THAN AVERAGE TEMPERATURES. THE UPPER LEVEL RIDGE STRENGTHENED
AGAIN OVER THE INTERIOR WEST...PUSHING TEMPERATURES WELL ABOVE
AVERAGE. THE HIGH TEMPERATURE OF 67 DEGREES ON THE 26TH SET A NEW
DAILY RECORD AND TIED THE MONTHLY RECORD HIGH TEMPERATURE. ANOTHER
DAILY RECORD HIGH OF 64 DEGREES WAS SET ON THE 27TH.

$$



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