Climatological Report (Monthly)
Issued by NWS

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
000
CXUS55 KTFX 020324
CLMHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
812 PM MST THU JAN 1 2015

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

...THE HELENA MT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1866 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              64   12/27/1980
                        12/04/1918
 LOW              -40   12/30/1880
HIGHEST            62   12/12        35      27       54  12/15
LOWEST            -14   12/30         9     -23      -17  12/07
AVG. MAXIMUM     34.9              31.7     3.2     33.2
AVG. MINIMUM     17.3              11.9     5.4     14.5
MEAN             26.1              21.8     4.3     23.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     12              14.1    -2.1       11
DAYS MIN <= 32     27              29.8    -2.8       26
DAYS MIN <= 0       5               5.5    -0.5        6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.64   1880
 MINIMUM            T   1935
                        1930
TOTALS           0.81              0.40    0.41     0.29
DAYS >= .01         9               6.6     2.4
DAYS >= .10         2               1.5     0.5
DAYS >= .50         0               0.0     0.0
DAYS >= 1.00        0               0.0     0.0
GREATEST
 24 HR. TOTAL    0.34   12/24 TO 12/24

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
 24 HR TOTAL       MM
TOTALS            4.4               7.3    -2.9      1.2
SINCE 7/1        15.2              16.1    -0.9
SNOWDEPTH AVG.      1
DAYS >= TRACE      13               6.0     7.0
DAYS >= 1.0         1               2.3    -1.3
GREATEST
 SNOW DEPTH         3   12/28
                        12/27
                        12/26
 24 HR TOTAL      3.0   12/24 TO 12/24

DEGREE_DAYS
HEATING TOTAL    1198              1339    -141     1267
 SINCE 7/1       2910              3221    -311     3058
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        469               406      63      589
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.1
HIGHEST WIND SPEED/DIRECTION    44/260    DATE  12/21
HIGHEST GUST SPEED/DIRECTION    56/250    DATE  12/21

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW               12     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      4
HAZE                      8

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

$$

December started out on a cold note...and generally ended on a cold
note as well. Our coldest temperature of the month was -14 on the
30th...while the warmest day was 62 degrees on the 12th...which was
a record high temperature for the day. Overall we were above normal
for temperatures for the entire month...with an average temperature
of 4.3 degrees above normal. We also managed to have a white
Christmas as well. On December 24th...3 inches of snow fell. For the
entire month we had 4.4 inches of snow...0.81 inches of rain.



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