Climatological Report (Monthly)
Issued by NWS Anchorage, AK

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CXAK58 PAFC 012339
CLMANC


CLIMATE REPORT
NATIONAL WEATHER SERVICE ANCHORAGE, AK
235 PM AKST MON JAN 1 2018

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

...THE ANCHORAGE AK CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1952 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              48   12/09/2005
                        12/26/1999
                        12/02/1992
 LOW              -36   12/14/1964
                        12/28/1961
                        12/27/1961
HIGHEST            46                MM      MM       37
LOWEST              5                MM      MM       -8
AVG. MAXIMUM     31.5              24.8     6.7     22.0
AVG. MINIMUM     21.4              13.2     8.2     10.1
MEAN             26.5              19.0     7.5     16.0
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     16              23.4    -7.4       30
DAYS MIN <= 32     29              30.1    -1.1       31
DAYS MIN <= 0       0               4.6    -4.6        2

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.67   2011
                        1955
 MINIMUM         0.09   1995
TOTALS           0.44              1.11   -0.67     1.47
DAILY AVG.       0.01              0.04   -0.03     0.05
DAYS >= .01         7              10.5    -3.5       11
DAYS >= .10         2               3.7    -1.7        5
DAYS >= .50         0               0.3    -0.3        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.20   12/19 TO 12/19           12/01 TO 12/02
                                                          12/02 TO 12/02
                                                          12/02 TO 12/02
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/02(00) TO 12/02(00)
                                                 12/02(00) TO 12/02(00)2
                                                 12/02(00) TO 12/02(00)2

SNOWFALL (INCHES)
RECORDS
 TOTAL           41.6   1955
 24 HR TOTAL     17.7   12/28/1955 TO 12/29/1955
 SNOW DEPTH        47   12/31/1955
TOTALS            2.1              16.7   -14.6     16.9
SINCE 7/1        10.4              38.1   -27.7     20.8
SNOWDEPTH AVG.      4                 8      -4        7
DAYS >= TRACE      10              10.8    -0.8       18
DAYS >= 1.0         1               4.6    -3.6        5
GREATEST
 SNOW DEPTH         7   12/03                         10  12/31
                                                          12/30
 24 HR TOTAL      1.1   12/19 TO 12/19           12/02 TO 12/02
                                                          12/02 TO 12/02
                                                          12/02 TO 12/02
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/02(00) TO 12/02(00)
                                                 12/02(00) TO 12/02(00)2
                                                 12/02(00) TO 12/02(00)2

DEGREE_DAYS
HEATING TOTAL    1186              1426    -240     1509
 SINCE 7/1       4060              4590    -530     4162
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          3                 2       1       13

FREEZE DATES
RECORD
 EARLIEST     08/28/1984
 LATEST       05/22/1964
EARLIEST                        09/23
LATEST                          05/08
...................................................

WIND (MPH)
AVERAGE WIND SPEED              5.8
RESULTANT WIND SPEED/DIRECTION   1/048
HIGHEST WIND SPEED/DIRECTION    27/150    DATE  12/11
HIGHEST GUST SPEED/DIRECTION    45/140    DATE  12/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         19

AVERAGE RH (PERCENT)     82

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       1
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW                6     SLEET                      1
FOG                      13     FOG W/VIS <= 1/4 MILE      6
HAZE                      0

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

$$



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