Monthly Climate Summary for  April  2010  at Whipsnade (Lodge)
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     Changeable early and late, but dry and sunny with warm days and cool nights from 8th-24th back forward
                         
Overall mean temperature was 8.4 ēC which is +1.2 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 13.9 ēC which is +2.7 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 2.9 ēC which is -0.3 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 13.9 ēC                
Mean 24hr minimum (09-09) was 2.9 ēC                
  Highest day max was 20.6 ēC on  the   28            
  Lowest day max was 7.8 ēC on  the 1            
  Highest night min was 9.2 ēC on  the 29            
  Lowest night min was -2.4 ēC on  the 21            
  Lowest grass min was -5.3 ēC on  the 21            
                         
Total rainfall this month was 20.9 mm which is 38.0 per  cent of the 1971-2000 average    
  Highest daily fall was 4.6 mm on  the 29            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 12.3 hrs which is   per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 2.8 hrs on  the 2            
  Mean rainfall intensity 1.70 mm/hr                
                         
Total CS sunshine this month was 210.9 hrs which is 151.8 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 12.9 hrs on  the 23            
                         
Maximum  snow depth  was 0.0 cm on  the  6            
                         
Mean sea-level pressure at 09Z 1020.3 mbar which is +5.1 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1034.8 mbar on  the 10            
  Lowest  pressure at 09Z 1000.9 mbar on  the 3            
                         
Number of days with:                      
Air Frost 7   0.2mm rain 8   No  sun 1   Snow lying 0    
Grnd Frost 14   1.0mm 6   3h  sun 25   Snow/sleet 0    
Max < 0ēC 0   5mm 0   6h  sun 17   Hail 1    
Max > 10 26   10mm 0   9h  sun 11   Thunder 1    
Max > 20 1   25mm 0   12h sun 3   Fog at 09Z 0    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month: