967  
CXAK58 PACD 041935  
CLMCDB  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ANCHORAGE, AK  
1134 AM AKDT WED OCT 4 2017  
   
...............................
 
 
   
..THE COLD BAY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1942 TO 2017  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE DATE(S)  
NORMAL    
............................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 70 MM  
LOW 31 09/19/2017  
HIGHEST 58 MM MM 65  
LOWEST 31R MM MM 35  
AVG. MAXIMUM 52.6 52.9 -0.3 57.1  
AVG. MINIMUM 43.5 43.3 0.2 45.3  
MEAN 48.1 48.1 0.0 51.2  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 0 0.0 0.0 0  
DAYS MIN <= 32 1 0.3 0.7 0  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM MM MM  
MINIMUM MM MM  
TOTALS 3.12 4.73 -1.61 5.81  
DAILY AVG. 0.10 0.16 -0.06 0.19  
DAYS >= .01 23 22.5 0.5 21  
DAYS >= .10 7 11.4 -4.4 12  
DAYS >= .50 2 2.5 -0.5 3  
DAYS >= 1.00 0 0.6 -0.6 1  
GREATEST  
24 HR. TOTAL 0.59 09/21 TO 09/21 09/29 TO 09/30  
09/30 TO 09/30  
09/30 TO 09/30  
STORM TOTAL MM MM  
(MM/DD(HH)) MM 09/30(00) TO 09/30(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 501 507 -6 408  
SINCE 7/1 1252 1346 -94 879  
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 16.6  
RESULTANT WIND SPEED/DIRECTION 3/290  
HIGHEST WIND SPEED/DIRECTION 58/250 DATE 09/16  
HIGHEST GUST SPEED/DIRECTION 71/250 DATE 09/16  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.80  
NUMBER OF DAYS FAIR 2  
NUMBER OF DAYS PC 4  
NUMBER OF DAYS CLOUDY 24  
 
AVERAGE RH (PERCENT) 86  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 0  
HEAVY RAIN 2 RAIN 10  
LIGHT RAIN 28 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 0  
LIGHT SNOW 0 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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