917  
CDHW40 PHFO 201245  
CLIHNL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE HONOLULU HI  
245 AM HST MON SEP 20 2021  
   
...............................
 
 
   
..THE HONOLULU HI CLIMATE SUMMARY FOR SEPTEMBER 19 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 88 234 PM 95 1994 88 0 89  
MINIMUM 74 408 AM 69 1955 75 -1 78  
AVERAGE 81 82 -1 84  
 
PRECIPITATION (IN)  
YESTERDAY 0.02 0.10 2004 0.03 -0.01 T  
MONTH TO DATE 0.07 0.59 -0.52 0.05  
SINCE SEP 1 0.07 0.59 -0.52 0.05  
SINCE JAN 1 9.95 10.18 -0.23 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 16 16 0 19  
MONTH TO DATE 319 321 -2 342  
SINCE SEP 1 319 321 -2 342  
SINCE JAN 1 3569 3398 171 3558    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 12.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 79 300 AM  
LOWEST 45 100 PM  
AVERAGE 62  
   
......................................................
 
 
THE HONOLULU HI CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 92 1986  
1987  
1995  
MINIMUM TEMPERATURE (F) 75 68 1955  
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2021.....SUNRISE 620 AM HST SUNSET 629 PM HST  
SEPTEMBER 21 2021.....SUNRISE 620 AM HST SUNSET 628 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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