056  
CXAK58 PASN 020039  
CLMSNP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ANCHORAGE, AK  
336 PM AKST MON JAN 1 2018  
   
...............................
 
 
 
...THE SAINT PAUL ISLAND CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1892 TO 2017  
 
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 43 MM MM 44  
LOWEST 15 MM MM 14  
AVG. MAXIMUM 35.8 33.0 2.8 38.6  
AVG. MINIMUM 27.6 24.7 2.9 29.4  
MEAN 31.7 28.9 2.8 34.0  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 5 10.7 -5.7 4  
DAYS MIN <= 32 25 23.7 1.3 20  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM MM MM  
MINIMUM MM MM  
TOTALS 1.99 2.25 -0.26 3.60  
DAILY AVG. 0.06 0.07 -0.01 0.12  
DAYS >= .01 21 21.5 -0.5 26  
DAYS >= .10 6 8.0 -2.0 11  
DAYS >= .50 1 0.5 0.5 1  
DAYS >= 1.00 0 0.0 0.0 0  
GREATEST  
24 HR. TOTAL 0.52 12/15 TO 12/15 12/31 TO 12/31  
12/31 TO 12/31  
12/31 TO 12/31  
STORM TOTAL MM MM  
(MM/DD(HH)) MM 12/31(00) TO 12/31(00)  
12/31(00) TO 12/31(00)1  
12/31(00) TO 12/31(00)1  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL MM MM  
24 HR TOTAL MM  
SNOW DEPTH MM MM  
TOTALS 2.7 12.1 -9.4 4.5  
SINCE 7/1 5.3 22.4 -17.1 11.1  
SNOWDEPTH AVG. 1 3 -2 0  
DAYS >= TRACE 21 14.9 6.1 21  
DAYS >= 1.0 2 3.8 -1.8  
GREATEST  
SNOW DEPTH 3 12/13 1 12/31  
12/12 12/02  
12/11  
24 HR TOTAL 1.1 12/08 TO 12/08 12/31 TO 12/31  
12/31 TO 12/31  
12/31 TO 12/31  
STORM TOTAL MM MM  
(MM/DD(HH)) MM  
 
DEGREE_DAYS  
HEATING TOTAL 1024 1121 -97 956  
SINCE 7/1 4102 4542 -440 3525  
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 19.1  
RESULTANT WIND SPEED/DIRECTION 2/052  
HIGHEST WIND SPEED/DIRECTION 52/190 DATE 12/20  
HIGHEST GUST SPEED/DIRECTION 65/180 DATE 12/20  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.80  
NUMBER OF DAYS FAIR 2  
NUMBER OF DAYS PC 9  
NUMBER OF DAYS CLOUDY 20  
 
AVERAGE RH (PERCENT) 84  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 0  
HEAVY RAIN 0 RAIN 0  
LIGHT RAIN 9 FREEZING RAIN 0  
LT FREEZING RAIN 1 HAIL 0  
HEAVY SNOW 0 SNOW 2  
LIGHT SNOW 31 SLEET 0  
FOG 28 FOG W/VIS <= 1/4 MILE 0  
HAZE 1  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab AK Page Main Text Page