828  
CDUS43 KDMX 180652  
CLIMCW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE DES MOINES IA  
1252 AM CST MON DEC 18 2023  
   
...............................
 
 
   
..THE MASON CITY IA CLIMATE SUMMARY FOR DECEMBER 17 2023
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1893 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 37 334 PM 57 1939 29 8 18  
MINIMUM 28 1159 PM -18 1983 13 15 6  
AVERAGE 33 21 12 12  
 
PRECIPITATION (IN)  
YESTERDAY T 0.50 1977 0.04 -0.04 0.02  
MONTH TO DATE 0.11 0.74 -0.63 0.80  
SINCE DEC 1 0.11 0.74 -0.63 0.80  
SINCE JAN 1 24.40 35.70 -11.30 28.56  
 
SNOWFALL (IN)  
YESTERDAY MM 4.0 1990 0.4 MM 0.4  
MONTH TO DATE T 4.7 -4.7 8.1  
SINCE DEC 1 T 4.7 -4.7 8.1  
SINCE JUL 1 1.9 8.1 -6.2 12.1  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 44 -12 53  
MONTH TO DATE 590 699 -109 674  
SINCE DEC 1 590 699 -109 674  
SINCE JUL 1 1972 2356 -384 2286  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 743 602 141 675    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 33 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 47 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 15.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 200 AM  
LOWEST 72 1100 PM  
AVERAGE 84  
   
......................................................
 
 
THE MASON CITY IA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 29 61 1923  
MINIMUM TEMPERATURE (F) 13 -26 1983  
 
SUNRISE AND SUNSET  
DECEMBER 18 2023......SUNRISE 740 AM CST SUNSET 440 PM CST  
DECEMBER 19 2023......SUNRISE 741 AM CST SUNSET 440 PM CST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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