Monthly Climate Summary for September 2003 at Luton (Cranleigh Gdns)
                          home daily
                                        Warm days and cool nights.  Dry and sunny.         back forward
                         
Overall mean temperature was 15.1 ēC which is +1.0 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 21.3 ēC which is +2.9 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 8.8 ēC which is -0.9 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 21.3 ēC                
Mean 24hr minimum (09-09) was 8.8 ēC                
  Highest day max was 28.0 ēC on  the   16            
  Lowest day max was 14.5 ēC on  the 23            
  Highest night min was 15.5 ēC on  the 22            
  Lowest night min was 0.8 ēC on  the 24            
  Lowest grass min was -2.1 ēC on  the 24            
                         
Total rainfall this month was 21.1 mm which is 32.9 per  cent of the 1971-2000 average    
  Highest daily fall was 11.8 mm on  the 22            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 9.9 hrs which is 26.7 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 4.0 hrs on  the 22            
  Mean rainfall intensity 2.13 mm/hr                
                         
Total CS sunshine this month was 185.1 hrs which is 135.6 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 11.5 hrs on  the 4            
                         
Maximum  snow depth  was 0.0 cm on  the               
                         
Mean sea-level pressure at 09Z 1020.6 mbar which is 4.2 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1032.5 mbar on  the 24            
  Lowest  pressure at 09Z 1004.5 mbar on  the 22            
                         
Number of days with:                      
Air Frost 0   0.2mm rain 5   No  sun 0   Snow lying 0    
Grnd Frost 3   1.0mm 4   3h  sun 22   Snow/sleet 0    
Max < 0ēC 0   5mm 1   6h  sun 15   Hail 1    
Max > 10 30   10mm 1   9h  sun 10   Thunder 0    
Max > 20 18   25mm 0   12h sun 0   Fog at 09Z 0    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month:                  
Mean maximum was the highest for September since 1959.               
Sunniest September since 1964, and driest since 1996.