729  
CXAK58 PASN 011028  
CLMSNP  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ANCHORAGE, AK  
228 AM AKDT FRI OCT 01 2021  
   
...............................
 
 
...THE SAINT PAUL ISLAND CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2021...  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1892 TO 2021  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE  
NORMAL    
..........................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 62 MM  
LOW 29 09/26/2018  
09/14/2017  
03/12/1971  
HIGHEST 57 MM MM 55  
LOWEST 31 MM MM 31  
AVG. MAXIMUM 50.7 50.1 0.6 50.5  
AVG. MINIMUM 41.2 41.9 -0.7 41.6  
MEAN 46.0 46.0 -0.0 46.0  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 0 0.0 0.0 0  
DAYS MIN <= 32 2 1.8 0.2 1  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 2.82 2020  
MINIMUM 2.82 2020  
TOTALS 4.02 3.00 1.02 2.82  
DAILY AVG. 0.13 0.10 0.03 0.09  
DAYS >= .01 22 19.5 2.5 18  
DAYS >= .10 11 8.2 2.8 4  
DAYS >= .50 2 1.5 0.5 3  
DAYS >= 1.00 0 0.2 -0.2 0  
GREATEST  
24 HR. TOTAL 0.74 09/15 TO 09/16 0.70  
STORM TOTAL 0.68 0.70  
(MM/DD(HH))  
 
DEGREE DAYS  
HEATING TOTAL 563 570 -7 415  
SINCE 7/1 1531 1580 -49 MM  
COOLING TOTAL 0 0 0 0  
SINCE 1/1 0 0 0 MM  
 
FREEZE DATES  
RECORD  
EARLIEST MM  
LATEST MM  
EARLIEST 09/22 MM  
LATEST 05/19    
..........................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 13.6  
RESULTANT WIND SPEED/DIRECTION 3/320  
HIGHEST WIND SPEED/DIRECTION 41/310 DATE 09/29  
HIGHEST GUST SPEED/DIRECTION 52/310 DATE 09/29  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.76  
NUMBER OF DAYS FAIR 1  
NUMBER OF DAYS PC 13  
NUMBER OF DAYS CLOUDY 16  
 
AVERAGE RH (PERCENT) 83  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 0  
HEAVY RAIN 1 RAIN 8  
LIGHT RAIN 25 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 2 SLEET 0  
FOG 24 FOG W/VIS <= 1/4 MILE 2  
HAZE 9  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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