968  
CXAK58 PASN 041935  
CLMSNP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ANCHORAGE, AK  
1134 AM AKDT WED OCT 4 2017  
   
...............................
 
 
 
...THE SAINT PAUL ISLAND CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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 61 MM  
LOW 29 09/14/2017  
HIGHEST 55 MM MM 59  
LOWEST 29R MM MM 37  
AVG. MAXIMUM 50.0 49.6 0.4 53.6  
AVG. MINIMUM 41.7 41.1 0.6 46.0  
MEAN 45.8 45.3 0.5 49.8  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 0 0.0 0.0 0  
DAYS MIN <= 32 2 2.0 0.0 0  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM MM MM  
MINIMUM MM MM  
TOTALS 1.71 2.99 -1.28 4.45  
DAILY AVG. 0.06 0.10 -0.04 0.15  
DAYS >= .01 18 19.6 -1.6 22  
DAYS >= .10 5 8.2 -3.2 13  
DAYS >= .50 0 1.4 -1.4 3  
DAYS >= 1.00 0 0.3 -0.3 0  
GREATEST  
24 HR. TOTAL 0.45 09/15 TO 09/15 09/02 TO 09/02  
09/30 TO 09/30  
09/30 TO 09/30  
STORM TOTAL MM MM  
(MM/DD(HH)) MM 09/02(00) TO 09/02(00)  
09/30(00) TO 09/30(00)0  
09/30(00) TO 09/30(00)0  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL MM MM  
24 HR TOTAL MM  
SNOW DEPTH MM MM  
TOTALS 0.0 T 0.0 0.0  
SINCE 7/1 0.0 T 0.0 0.0  
SNOWDEPTH AVG. 0 MM MM 0  
DAYS >= TRACE 0 0.1 -0.1 0  
DAYS >= 1.0 0 0.0 0.0  
GREATEST  
SNOW DEPTH 0 MM 0 MM  
24 HR TOTAL 0.0 09/30 TO 09/30 09/30 TO 09/30  
09/30 TO 09/30  
09/30 TO 09/30  
STORM TOTAL MM MM  
(MM/DD(HH)) MM  
 
DEGREE_DAYS  
HEATING TOTAL 568 590 -22 418  
SINCE 7/1 1559 1643 -84 1031  
COOLING TOTAL 0 0 0 0  
SINCE 1/1 0 0 0 0  
 
FREEZE DATES  
RECORD  
EARLIEST MM  
LATEST MM  
EARLIEST 09/13 MM  
LATEST MM    
.............................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 15.1  
RESULTANT WIND SPEED/DIRECTION 6/344  
HIGHEST WIND SPEED/DIRECTION 41/300 DATE 09/16  
HIGHEST GUST SPEED/DIRECTION 55/300 DATE 09/16  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.80  
NUMBER OF DAYS FAIR 3  
NUMBER OF DAYS PC 4  
NUMBER OF DAYS CLOUDY 23  
 
AVERAGE RH (PERCENT) 87  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 0  
HEAVY RAIN 0 RAIN 2  
LIGHT RAIN 24 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 0 SLEET 0  
FOG 21 FOG W/VIS <= 1/4 MILE 1  
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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