Monthly Climate Summary for  June  2007 at Chesham (Tennis Club)
                          home daily
                              Dry first 12 days, then frequent and occasional heavy rain       back forward
                         
Overall mean temperature was 15.0 ēC which is +0.5 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 9.8 ēC which is -0.1 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 20.2 ēC                
Mean 24hr minimum (09-09) was 10.3 ēC                
  Highest day max was 24.9 ēC on  the   2            
  Lowest day max was 15.1 ēC on  the 6            
  Highest night min was 14.1 ēC on  the 14            
  Lowest night min was 0.0 ēC on  the 4            
  Lowest grass min was   ēC on  the              
                         
Total rainfall this month was 79.6 mm which is 125.4 per  cent of the 1971-2000 average    
  Highest daily fall was 18.8 mm on  the 21            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 20.3 hrs which is 77.3 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 4.1 hrs on  the 30            
  Mean rainfall intensity 3.91 mm/hr                
                         
Total est sunshine this month was 129.1 hrs which is 72.2 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 8.4 hrs on  the 2            
                         
Maximum  snow depth  was 0.0 cm on  the  28 and 30            
                         
Mean sea-level pressure at 09Z 1011.0 mbar which is -+5.8 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1024.5 mbar on  the 5            
  Lowest  pressure at 09Z 995.7 mbar on  the 25            
                         
Total number of days with:                      
Air Frost 0   0.2mm rain 16   No  sun 0   Snow lying 0    
Grnd Frost 0   1.0mm 16   3h  sun 23   Snow/sleet 0    
Max < 0ēC 0   5mm 5   6h  sun 5   Hail 0    
Max > 10 30   10mm 2   9h  sun 0   Thunder 0    
Max > 20 17   25mm 0   12h sun 0   Fog at 09Z 0    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month: