Monthly Climate Summary for  June  2011  at Luton (Cranleigh Gardens)
                          home daily
                          Often changeable; brief hot spells during first and last weeks                              back forward
                         
Overall mean temperature was 15.1 ēC which is +0.6 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 20.2 ēC which is +1.2 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 9.9 ēC which is 0.0 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 20.3 ēC                
Mean 24hr minimum (09-09) was 9.9 ēC                
  Highest day max was 31.0 ēC on  the   27                 
  Lowest day max was 12.7 ēC on  the 12            
  Highest night min was 17.6 ēC on  the 27            
  Lowest night min was 5.0 ēC on  the 1            
  Lowest grass min was 1.6 ēC on  the 1            
                         
Total rainfall this month was 73.7 mm which is 116.1 per  cent of the 1971-2000 average    
  Highest daily fall was 13.5 mm on  the 5            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 68.9 hrs which is 262.0 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 16.0 hrs on  the 14            
  Mean rainfall intensity 1.07 mm/hr                
                         
Total CS sunshine this month was 207.6 hrs which is 116.0 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 13.7 hrs on  the 14            
                         
Maximum  snow depth  was 0.0 cm on  the               
                         
Mean sea-level pressure at 09Z 1015.7 mbar which is -1.1 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1034.6 mbar on  the 2            
  Lowest  pressure at 09Z 1000.7 mbar on  the 18            
                         
Number of days with:                      
Air Frost 0   0.2mm rain 15   No  sun 2   Snow lying 0    
Grnd Frost 0   1.0mm 12   3h  sun 24   Snow/sleet 0    
Max < 0ēC 0   5mm 7   6h  sun 21   Hail 0    
Max > 10 30   10mm 2   9h  sun 11   Thunder 1    
Max > 20 13   25mm 0   12h sun 2   Fog at 09Z 0    
Max > 30 1         15h sun 0   Gale 0    
                         
Notable events during the month: