987  
CDHW40 PHFO 210236  
CLIHNL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE HONOLULU HI  
436 PM HST MON SEP 20 2021  
   
...............................
 
 
   
..THE HONOLULU HI CLIMATE SUMMARY FOR SEPTEMBER 20 2021
 
 
VALID TODAY AS OF 0425 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 90 122 PM 92 1986 88 2 89  
1987  
1995  
MINIMUM 75 343 AM 68 1955 75 0 74  
AVERAGE 83 82 1 82  
 
PRECIPITATION (IN)  
TODAY 0.00 0.69 1968 0.03 -0.03 T  
MONTH TO DATE 0.07 0.62 -0.55 0.05  
SINCE SEP 1 0.07 0.62 -0.55 0.05  
SINCE JAN 1 9.95 10.21 -0.26 9.93  
 
SNOWFALL (IN)  
TODAY MM  
MONTH TO DATE MM  
SINCE SEP 1 MM  
SINCE JUL 1 MM  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 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  
TODAY 18 16 2 17  
MONTH TO DATE 337 337 0 359  
SINCE SEP 1 337 337 0 359  
SINCE JAN 1 3587 3414 173 3575    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 11.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 69 200 AM  
LOWEST 40 100 PM  
AVERAGE 55  
   
......................................................
 
 
THE HONOLULU HI CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 92 1990  
1995  
MINIMUM TEMPERATURE (F) 75 67 1975  
 
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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