Monthly Climate Summary for  March 2010 at Chesham (Tennis Club)
                          home daily
                                First half cold and dry;  second half mild and unsettled       back forward
                         
Overall mean temperature was 5.7 ēC which is -0.6 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 9.9 ēC which is -0.1 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 1.5 ēC which is -1.2 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 9.9 ēC                
Mean 24hr minimum (09-09) was 1.3 ēC                
  Highest day max was 17.2 ēC on  the   24            
  Lowest day max was 4.3 ēC on  the 7            
  Highest night min was 10.2 ēC on  the 20            
  Lowest night min was -7.2 ēC on  the 7            
  Lowest grass min was   ēC on  the              
                         
Total rainfall this month was 54.4 mm which is 100.5 per  cent of the 1971-2000 average    
  Highest daily fall was 8.3 mm on  the 30            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 17.3 hrs which is 32.7 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 2.8 hrs on  the 19            
  Mean rainfall intensity 3.15 mm/hr                
                         
Total est sunshine this month was 118.2 hrs which is 112.9 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 7.1 hrs on  the 7            
                         
Maximum  snow depth  was   cm on  the               
                         
Mean sea-level pressure at 09Z 1016.3 mbar which is +1.7 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1033.9 mbar on  the 7            
  Lowest  pressure at 09Z 984.7 mbar on  the 31            
                         
Total number of days with:                      
Air Frost 12   0.2mm rain 16   No  sun 2   Snow lying 0    
Grnd Frost 0   1.0mm 13   3h  sun 20   Snow/sleet 0    
Max < 0ēC 0   5mm 4   6h  sun 8   Hail 0    
Max > 10 17   10mm 0   9h  sun 0   Thunder 0    
Max > 20 0   25mm 0   12h sun 0   Fog at 09Z 0    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month: