246  
CDHW40 PHFO 190236  
CLIHNL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE HONOLULU HI  
436 PM HST SAT SEP 18 2021  
   
...............................
 
 
   
..THE HONOLULU HI CLIMATE SUMMARY FOR SEPTEMBER 18 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 88 241 PM 92 1985 88 0 91  
1995  
MINIMUM 75 438 AM 68 1979 75 0 76  
AVERAGE 82 82 0 84  
 
PRECIPITATION (IN)  
TODAY T 0.19 1951 0.02 -0.02 0.00  
MONTH TO DATE 0.05 0.56 -0.51 0.05  
SINCE SEP 1 0.05 0.56 -0.51 0.05  
SINCE JAN 1 9.93 10.15 -0.22 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 17 16 1 19  
MONTH TO DATE 303 305 -2 323  
SINCE SEP 1 303 305 -2 323  
SINCE JAN 1 3553 3382 171 3539    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 15.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 76 200 AM  
LOWEST 40 1200 PM  
AVERAGE 58  
   
......................................................
 
 
THE HONOLULU HI CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 95 1994  
MINIMUM TEMPERATURE (F) 75 69 1955  
 
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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