Monthly Climate Summary for  May  2011  at Whipsnade (Lodge)
                          home daily
                        Warm and sunny till the 10th, then rather more changeable       back forward
                         
Overall mean temperature was 12.2 ēC which is +1.4 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 17.3 ēC which is +2.0 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 7.0 ēC which is +0.8 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 17.4 ēC                
Mean 24hr minimum (09-09) was 7.0 ēC                
  Highest day max was 23.2 ēC on  the   6            
  Lowest day max was 13.3 ēC on  the 15            
  Highest night min was 13.5 ēC on  the 8            
  Lowest night min was 1.8 ēC on  the 4            
  Lowest grass min was -1.9 ēC on  the 19            
                         
Total rainfall this month was 35.6 mm which is 64.7 per  cent of the 1971-2000 average    
  Highest daily fall was 14.5 mm on  the 7            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 28.1 hrs which is   per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 8.7 hrs on  the 7            
  Mean rainfall intensity 1.27 mm/hr                
                         
Total CS sunshine this month was 239.9 hrs which is 129.8 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 13.8 hrs on  the 3            
                         
Maximum  snow depth  was 0.0 cm on  the  22            
                         
Mean sea-level pressure at 09Z 1018.2 mbar which is +3.1 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1026.2 mbar on  the 15            
  Lowest  pressure at 09Z 1005.3 mbar on  the 26            
                         
Number of days with:                      
Air Frost 0   0.2mm rain 9   No  sun 0   Snow lying 0    
Grnd Frost 5   1.0mm 6   3h  sun 24   Snow/sleet 0    
Max < 0ēC 0   5mm 3   6h  sun 18   Hail 0    
Max > 10 31   10mm 1   9h  sun 15   Thunder 0    
Max > 20 4   25mm 0   12h sun 9   Fog at 09Z 0    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month: