Monthly Climate Summary for  April  2007  at Whipsnade (Lodge)
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                                                     Exceptionally warm, sunny and dry         back forward
                         
Overall mean temperature was 10.5 ēC which is +3.3 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 16.4 ēC which is +5.2 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 4.6 ēC which is +1.4 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 16.4 ēC                
Mean 24hr minimum (09-09) was 4.6 ēC                
  Highest day max was 22.0 ēC on  the   15            
  Lowest day max was 7.9 ēC on  the 3            
  Highest night min was 12.0 ēC on  the 25            
  Lowest night min was -0.5 ēC on  the 7            
  Lowest grass min was -2.7 ēC on  the 5            
                         
Total rainfall this month was 0.7 mm which is 1.3 per  cent of the 1971-2000 average    
  Highest daily fall was 0.4 mm on  the 23            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 2.8 hrs which is   per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 1.3 hrs on  the 24            
  Mean rainfall intensity 0.25 mm/hr                
                         
Total CS sunshine this month was 227.8 hrs which is 164.0 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 13.4 hrs on  the 30            
                         
Maximum  snow depth  was 0.0 cm on  the  22            
                         
Mean sea-level pressure at 09Z 1023.7 mbar which is +8.5 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1030.1 mbar on  the 2            
  Lowest  pressure at 09Z 1013.3 mbar on  the 25            
                         
Number of days with:                      
Air Frost 2   0.2mm rain 2   No  sun 0   Snow lying 0    
Grnd Frost 8   1.0mm 0   3h  sun 27   Snow/sleet 0    
Max < 0ēC 0   5mm 0   6h  sun 20   Hail 0    
Max > 10 28   10mm 0   9h  sun 12   Thunder 0    
Max > 20 3   25mm 0   12h sun 3   Fog at 09Z 3    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month: