730  
CXAK58 PACD 011028  
CLMCDB  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ANCHORAGE, AK  
228 AM AKDT FRI OCT 01 2021  
   
...............................
 
 
   
..THE COLD BAY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2021
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1942 TO 2021  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE  
NORMAL    
..........................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 70 MM  
LOW 31 09/19/2017  
HIGHEST 60 MM MM 61  
LOWEST 32 MM MM 32  
AVG. MAXIMUM 52.8 53.4 -0.6 53.7  
AVG. MINIMUM 44.1 43.4 0.7 41.2  
MEAN 48.5 48.4 0.1 47.5  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 0 0.0 0.0 0  
DAYS MIN <= 32 1 0.7 0.3 1  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 1.05 2020  
MINIMUM 1.05 2020  
TOTALS 4.49 4.50 -0.01 1.05  
DAILY AVG. 0.16 0.15 0.01 0.20  
DAYS >= .01 22 22.6 -0.6 4  
DAYS >= .10 13 11.4 1.6 4  
DAYS >= .50 3 2.3 0.7 1  
DAYS >= 1.00 0 0.5 -0.5 0  
GREATEST  
24 HR. TOTAL 1.00 09/29 TO 09/30 0.61  
STORM TOTAL 0.93 1.95  
(MM/DD(HH))  
 
DEGREE DAYS  
HEATING TOTAL 440 498 -58 521  
SINCE 7/1 1197 1298 -101 MM  
COOLING TOTAL 0 0 0 0  
SINCE 1/1 0 0 0 MM  
 
FREEZE DATES  
RECORD  
EARLIEST MM  
LATEST MM  
EARLIEST 09/21 MM  
LATEST 05/18    
..........................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 15.8  
RESULTANT WIND SPEED/DIRECTION 7/280  
HIGHEST WIND SPEED/DIRECTION 54/280 DATE 09/30  
HIGHEST GUST SPEED/DIRECTION 66/270 DATE 09/12  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.77  
NUMBER OF DAYS FAIR 5  
NUMBER OF DAYS PC 5  
NUMBER OF DAYS CLOUDY 20  
 
AVERAGE RH (PERCENT) 82  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 0  
HEAVY RAIN 2 RAIN 12  
LIGHT RAIN 23 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 1 SLEET 0  
FOG 24 FOG W/VIS <= 1/4 MILE 0  
HAZE 4  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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