Monthly Climate Summary for  August 2011  at Luton (Cranleigh Gardens)
                          home daily
                                  Very warm start, then mostly cool and unsettled                            back forward
                         
Overall mean temperature was 16.4 ēC which is -0.5 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 20.9 ēC which is -1.0 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 11.9 ēC which is +0.1 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 20.9 ēC                
Mean 24hr minimum (09-09) was 11.9 ēC                
  Highest day max was 29.4 ēC on  the   2                 
  Lowest day max was 13.3 ēC on  the 18            
  Highest night min was 16.3 ēC on  the 2            
  Lowest night min was 7.3 ēC on  the 19            
  Lowest grass min was 4.4 ēC on  the 10            
                         
Total rainfall this month was 68.2 mm which is 134.8 per  cent of the 1971-2000 average    
  Highest daily fall was 16.6 mm on  the 18            
Number of hours with rain was                    
TSR rainfall duration was 47.1 hrs which is 125.9 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 11.4 hrs on  the 25            
  Mean rainfall intensity 1.45 mm/hr                
                         
Total CS sunshine this month was 128.9 hrs which is 69.7 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 12.5 hrs on  the 9            
                         
Maximum  snow depth  was 0.0 cm on  the               
                         
Mean sea-level pressure at 09Z 1013.3 mbar which is -2.8 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1022.8 mbar on  the 10            
  Lowest  pressure at 09Z 1002.7 mbar on  the 7            
                         
Number of days with:                      
Air Frost 0   0.2mm rain 18   No  sun 4   Snow lying 0    
Grnd Frost 0   1.0mm 12   3h  sun 20   Snow/sleet 0    
Max < 0ēC 0   5mm 5   6h  sun 8   Hail 0    
Max > 10 31   10mm 2   9h  sun 3   Thunder 0    
Max > 20 19   25mm 0   12h sun 1   Fog at 09Z 0    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month: