Monthly Climate Summary for   April   2006  at Luton (Cranleigh Gardens)
                          home daily
                                   Changeable and rather cold up to the 11th, then moderately warm       back forward
                         
Overall mean temperature was 9.0 ēC which is +0.8 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 13.4 ēC which is +0.8 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 4.7 ēC which is +0.8 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 13.5 ēC                
Mean 24hr minimum (09-09) was 4.7 ēC                
  Highest day max was 17.6 ēC on  the   22                 
  Lowest day max was 6.9 ēC on  the 11            
  Highest night min was 9.2 ēC on  the 23            
  Lowest night min was -2.9 ēC on  the 5            
  Lowest grass min was -9.4 ēC on  the 5            
                         
Total rainfall this month was 40.6 mm which is 70.2 per  cent of the 1971-2000 average    
  Highest daily fall was 12.7 mm on  the 30            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 47.5 hrs which is 102.8 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 10.1 hrs on  the 5            
  Mean rainfall intensity 0.85 mm/hr                
                         
Total CS sunshine this month was 147.8 hrs which is 106.4 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 11.3 hrs on  the 5            
                         
Maximum  snow depth  was 0.0 cm on  the               
                         
Mean sea-level pressure at 09Z 1015.3 mbar which is +0.1 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1026.5 mbar on  the 28            
  Lowest  pressure at 09Z 1003.7 mbar on  the 1            
                         
Number of days with:                      
Air Frost 5   0.2mm rain 16   No  sun 4   Snow lying 0    
Grnd Frost 10   1.0mm 9   3h  sun 20   Snow/sleet 4    
Max < 0ēC 0   5mm 2   6h  sun 14   Hail 1    
Max > 10 28   10mm 1   9h  sun 3   Thunder 1    
Max > 20 0   25mm 0   12h sun 0   Fog at 09Z 1    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month:                  
Although 0.8 degC warmer than the 1971-2000 mean, this was nevertheless the coolest April for five years      
The end of April was reached without a maximum of 18°C for the first time since 2000