Monthly Climate Summary for  August  1990 at Whipsnade,  Beds
                          home daily
                                  Dry, sunny and warm;  exceptional heatwave 1st-4th                       back forward
                         
Overall mean temperature was 18.0 ēC which is +2.1 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 23.6 ēC which is +3.1 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 12.3 ēC which is +1.0 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 23.6 ēC                
Mean 24hr minimum (09-09) was 12.3 ēC                
  Highest day max was 33.7 ēC on  the   3            
  Lowest day max was 18.3 ēC on  the 18            
  Highest night min was 17.6 ēC on  the 4            
  Lowest night min was 8.0 ēC on  the 7            
  Lowest grass min was   ēC on  the              
                         
Total rainfall this month was 32.4 mm which is 58.9 per  cent of the 1971-2000 average    
  Highest daily fall was 13.2 mm on  the 18            
Number of hours with rain was                    
Equiv. TSR rainfall duration was   hrs which is   per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration   hrs on  the              
  Mean rainfall intensity   mm/hr                
                         
Total CS sunshine this month was 242.3 hrs which is 131.0 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 13.3 hrs on  the 1            
                         
Maximum  snow depth  was 0.0 cm on  the               
                         
Mean sea-level pressure at 09Z 1018.8 mbar which is +2.7 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1026.4 mbar on  the 1            
  Lowest  pressure at 09Z 1004.4 mbar on  the 15            
                         
Number of days with:                      
Air Frost 0   0.2mm rain 8   No  sun 0   Snow lying 0    
Grnd Frost 0   1.0mm 5   3h  sun 28   Snow/sleet 0    
Max < 0ēC 0   5mm 3   6h  sun 23   Hail 0    
Max > 10 31   10mm 1   9h  sun 11   Thunder 1    
Max > 20 22   25mm 0   12h sun 4   Fog at 09Z 0    
Max > 30 4         15h sun 0   Gale 0    
                         
Notable events during the month:                  
                 
The maximum of 33.7ēC on the 3rd was easily a record for Whipsnade in both its guises; the four consecutive days over 30ēC was also a record
15 consecutive days with no sig rain 30 July to 13 August inclusive