088  
CDHW40 PHFO 181245  
CLIHNL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE HONOLULU HI  
245 AM HST SAT SEP 18 2021  
   
...............................
 
 
   
..THE HONOLULU HI CLIMATE SUMMARY FOR SEPTEMBER 17 2021
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1940 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 87 1147 AM 92 1987 88 -1 89  
1995  
MINIMUM 77 725 AM 70 1950 75 2 77  
1971  
1974  
AVERAGE 82 82 0 83  
 
PRECIPITATION (IN)  
YESTERDAY T 1.35 1963 0.03 -0.03 0.00  
MONTH TO DATE 0.05 0.54 -0.49 0.05  
SINCE SEP 1 0.05 0.54 -0.49 0.05  
SINCE JAN 1 9.93 10.13 -0.20 9.93  
 
SNOWFALL (IN)  
YESTERDAY MM  
MONTH TO DATE MM  
SINCE SEP 1 MM  
SINCE JUL 1 MM  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 17 17 0 18  
MONTH TO DATE 286 289 -3 304  
SINCE SEP 1 286 289 -3 304  
SINCE JAN 1 3536 3366 170 3520    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 14.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 69 100 AM  
LOWEST 46 1200 PM  
AVERAGE 58  
   
......................................................
 
 
THE HONOLULU HI CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 92 1985  
1995  
MINIMUM TEMPERATURE (F) 75 68 1979  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2021.....SUNRISE 620 AM HST SUNSET 631 PM HST  
SEPTEMBER 19 2021.....SUNRISE 620 AM HST SUNSET 630 PM HST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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