Monthly Climate Summary for September 1993 at Whipsnade, Beds
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Overall mean temperature was 11.9 ēC which is -1.3 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 15.7 ēC which is -1.5 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 8.1 ēC which is -1.2 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 15.7 ēC                
Mean 24hr minimum (09-09) was 8.1 ēC                
  Highest day max was 23.4 ēC on  the   1            
  Lowest day max was 7.9 ēC on  the 27            
  Highest night min was 13.1 ēC on  the 9            
  Lowest night min was 3.9 ēC on  the 26            
  Lowest grass min was   ēC on  the              
                         
Total rainfall this month was 123.9 mm which is 217.4 per  cent of the 1971-2000 average    
  Highest daily fall was 18.8 mm on  the 13            
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 90.7 hrs which is 66.4 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 10.6 hrs on  the 1            
                         
Maximum  snow depth  was 0.0 cm on  the               
                         
Mean sea-level pressure at 09Z 1011.9 mbar which is -4.5 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1031.0 mbar on  the 1            
  Lowest  pressure at 09Z 991.9 mbar on  the 13            
                         
Number of days with:                      
Air Frost 0   0.2mm rain 18   No  sun 5   Snow lying 0    
Grnd Frost 0   1.0mm 14   3h  sun 14   Snow/sleet 0    
Max < 0ēC 0   5mm 9   6h  sun 5   Hail 0    
Max > 10 29   10mm 6   9h  sun 1   Thunder 2    
Max > 20 3   25mm 0   12h sun 0   Fog at 09Z 2    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month:                  
                 
<aximum of 7.9ēC on the 27th was abnormally low - possibly the lowest in September in this district since 1918