Monthly Climate Summary for  July  2003  at Luton (Cranleigh Gardens)
                          home daily
              Notable heatwave 9th-16th; cloudy and changeable but still warm from the 21st   back forward
                         
Overall mean temperature was 18.5 ēC which is +1.4 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 23.7 ēC which is +1.6 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 13.4 ēC which is +1.3 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 23.7 ēC                
Mean 24hr minimum (09-09) was 13.4 ēC                
  Highest day max was 32.5 ēC on  the   15            
  Lowest day max was 17.3 ēC on  the 5            
  Highest night min was 16.2 ēC on  the 17            
  Lowest night min was 9.1 ēC on  the 7            
  Lowest grass min was 5.3 ēC on  the 12            
                         
Total rainfall this month was 43.9 mm which is 98.4 per  cent of the 1971-2000 average    
  Highest daily fall was 11.0 mm on  the 30            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 47.4 hrs which is 118.5 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 7.0 hrs on  the 17            
  Mean rainfall intensity 0.93 mm/hr                
                         
Total CS sunshine this month was 193.5 hrs which is 101.7 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 15.1 hrs on  the 13            
                         
Maximum  snow depth  was 0.0 cm on  the               
                         
Mean sea-level pressure at 09Z 1015.0 mbar which is -2.3 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1024.0 mbar on  the 12            
  Lowest  pressure at 09Z 1006.0 mbar on  the 1            
                         
Number of days with:                      
Air Frost 0   0.2mm rain 14   No  sun 1   Snow lying 0    
Grnd Frost 0   1.0mm 12   3h  sun 20   Snow/sleet 0    
Max < 0ēC 0   5mm 3   6h  sun 14   Hail 0    
Max > 10 31   10mm 1   9h  sun 9   Thunder 1    
Max > 20 26   25mm 0   12h sun 4   Fog at 09Z 0    
Max > 30 2         15h sun 2   Gale 0    
                         
Notable events during the month:                  
Maximum of 32.5ēC on the 15th was  the highest in July since 1989, and the highest in any month since 1 Aug 1995