Monthly Climate Summary for  February 2007 at Chesham (Tennis Club)
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        Another mild and changeable month;  cold snap with some snow 4th-9th       back forward
                         
Overall mean temperature was 5.9 ēC which is +2.4 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 9.2 ēC which is +2.2 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 2.6 ēC which is +2.7 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 9.2 ēC                
Mean 24hr minimum (09-09) was 2.2 ēC                
  Highest day max was 13.0 ēC on  the   1            
  Lowest day max was 2.4 ēC on  the 8            
  Highest night min was 7.9 ēC on  the 20            
  Lowest night min was -8.7 ēC on  the 7            
  Lowest grass min was   ēC on  the              
                         
Total rainfall this month was 78.6 mm which is 154.4 per  cent of the 1971-2000 average    
  Highest daily fall was 10.6 mm on  the 10            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 29.1 hrs which is 56.6 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 4.0 hrs on  the 13            
  Mean rainfall intensity 2.70 mm/hr                
                         
Total est sunshine this month was 92.2 hrs which is 131.3 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 6.4 hrs on  the 7            
                         
Maximum  snow depth  was 0.0 cm on  the  28 and 30            
                         
Mean sea-level pressure at 09Z 1007.2 mbar which is -8.0 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1040.5 mbar on  the 3            
  Lowest  pressure at 09Z 979.4 mbar on  the 12            
                         
Total number of days with:                      
Air Frost 10   0.2mm rain 21   No  sun 3   Snow lying 0    
Grnd Frost 0   1.0mm 16   3h  sun 18   Snow/sleet 0    
Max < 0ēC 0   5mm 6   6h  sun 3   Hail 0    
Max > 10 15   10mm 1   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: