Monthly Climate Summary for December 2003 at Luton (Cranleigh Gardens)
                          home daily
                                Rather sunny;  temperature and rainfall near normal       back forward
                         
Overall mean temperature was 4.8 ēC which is -0.1 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 7.0 ēC which is -0.1 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 2.5 ēC which is -0.2 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 7.4 ēC                
Mean 24hr minimum (09-09) was 1.7 ēC                
  Highest day max was 13.3 ēC on  the   12            
  Lowest day max was 1.7 ēC on  the 22            
  Highest night min was 11.3 ēC on  the 13            
  Lowest night min was -4.6 ēC on  the 16            
  Lowest grass min was -7.1 ēC on  the 16            
                         
Total rainfall this month was 72.3 mm which is 106.8 per  cent of the 1971-2000 average    
  Highest daily fall was 10.0 mm on  the 31            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 102.0 hrs which is 140.0 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 18.0 hrs on  the 12            
  Mean rainfall intensity 0.71 mm/hr                
                         
Total CS sunshine this month was 59.1 hrs which is 121.9 per  cent of the 1971-2000 average    
Equiv. C/S sunshine total was   hrs which is   per  cent of the 1971-2000 average    
  Highest daily sun was 7.0 hrs on  the 7            
                         
Maximum  snow depth  was 0.0 cm on  the               
                         
Mean sea-level pressure at 09Z 1017.3 mbar which is +2.7 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1032.5 mbar on  the 7            
  Lowest  pressure at 09Z 996.0 mbar on  the 28            
                         
Number of days with:                      
Air Frost 12   0.2mm rain 21   No  sun 13   Snow lying 0    
Grnd Frost 18   1.0mm 14   3h  sun 8   Snow/sleet 3    
Max < 0ēC 0   5mm 8   6h  sun 4   Hail 1    
Max > 10 6   10mm 1   9h  sun 0   Thunder 0    
Max > 20 0   25mm 0   12h sun 0   Fog at 09Z 3    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month: