540  
CXAK58 PASN 012214 CCA  
CLMSNP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ANCHORAGE, AK  
621 AM AKST TUE JAN 1 2019  
   
...............................
 
 
 
...THE SAINT PAUL ISLAND CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1892 TO 2018  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE DATE(S)  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 44 12/13/2016  
12/03/1979  
12/19/1970  
LOW -3 12/31/1974  
HIGHEST 41 MM MM 43  
LOWEST 6 MM MM 15  
AVG. MAXIMUM 30.9 33.0 -2.1 35.8  
AVG. MINIMUM 22.7 24.7 -2.0 27.6  
MEAN 26.8 28.9 -2.1 31.7  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 20 10.7 9.3 5  
DAYS MIN <= 32 28 23.7 4.3 25  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM MM MM  
MINIMUM MM MM  
TOTALS 3.38 2.25 1.13 1.99  
DAILY AVG. 0.11 0.07 0.04 0.06  
DAYS >= .01 24 21.5 2.5 21  
DAYS >= .10 6 8.0 -2.0 6  
DAYS >= .50 2 0.5 1.5 1  
DAYS >= 1.00 1 0.0 1.0 0  
GREATEST  
24 HR. TOTAL 1.09 12/19 TO 12/19 12/15 TO 12/15  
12/08 TO 12/08EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
12/08 TO 12/08EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
STORM TOTAL MM MM  
(MM/DD(HH)) MM 12/15(00) TO 12/15(00)  
12/08(00) TO 12/08(00)8EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
12/08(00) TO 12/08(00)8EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL MM MM  
24 HR TOTAL MM  
SNOW DEPTH MM MM  
TOTALS T 12.1 -12.1 2.7  
SINCE 7/1 2.6 22.4 -19.8 5.3  
SNOWDEPTH AVG. 1 3 -2 1  
DAYS >= TRACE 1 14.9 -13.9 21  
DAYS >= 1.0 0 3.8 -3.8  
GREATEST  
SNOW DEPTH 4 12/31 3 12/13  
12/12  
12/11  
24 HR TOTAL T 12/31 TO 12/31 12/08 TO 12/08  
12/08 TO 12/08EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
12/08 TO 12/08EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
STORM TOTAL MM MM  
(MM/DD(HH)) MM  
 
DEGREE_DAYS  
HEATING TOTAL 1175 1121 54 1024  
SINCE 7/1 4167 4542 -375 4102  
COOLING TOTAL 0 0 0 0  
SINCE 1/1 0 0 0 0  
 
FREEZE DATES  
RECORD  
EARLIEST MM  
LATEST MM  
EARLIEST MM  
LATEST MM    
.............................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 17.0  
RESULTANT WIND SPEED/DIRECTION 9/045  
HIGHEST WIND SPEED/DIRECTION 52/230 DATE 12/30  
HIGHEST GUST SPEED/DIRECTION 65/220 DATE 12/30  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.80  
NUMBER OF DAYS FAIR 0  
NUMBER OF DAYS PC 9  
NUMBER OF DAYS CLOUDY 22  
 
AVERAGE RH (PERCENT) 78  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 6  
HEAVY RAIN 0 RAIN 2  
LIGHT RAIN 9 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 3 SNOW 11  
LIGHT SNOW 24 SLEET 0  
FOG 27 FOG W/VIS <= 1/4 MILE 5  
HAZE 13  
 
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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