Monthly Climate Summary for  July  2004  at Luton (Cranleigh Gardens)
                          home daily
            A changeable, cloudy month;  very cool until the 13th then consistently warm     back forward
                         
Overall mean temperature was 16.9 ēC which is -0.2 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 22.0 ēC which is -0.1 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 11.9 ēC which is -0.2 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 22.0 ēC                
Mean 24hr minimum (09-09) was 11.9 ēC                
  Highest day max was 28.1 ēC on  the   29            
  Lowest day max was 17.5 ēC on  the 12            
  Highest night min was 16.7 ēC on  the 16            
  Lowest night min was 6.6 ēC on  the 6            
  Lowest grass min was 4.5 ēC on  the 6            
                         
Total rainfall this month was 60.1 mm which is 134.8 per  cent of the 1971-2000 average    
  Highest daily fall was 23.2 mm on  the 7            
Number of hours with rain was                    
TSR rainfall duration was 29.7 hrs which is 74.3 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 7.6 hrs on  the 7            
  Mean rainfall intensity 2.02 mm/hr                
                         
Total CS sunshine this month was 175.4 hrs which is 92.2 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 12.8 hrs on  the 23            
                         
Maximum  snow depth  was 0.0 cm on  the               
                         
Mean sea-level pressure at 09Z 1015.8 mbar which is -1.5 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1026.0 mbar on  the 24            
  Lowest  pressure at 09Z 1005.2 mbar on  the 8            
                         
Number of days with:                      
Air Frost 0   0.2mm rain 18   No  sun 0   Snow lying 0    
Grnd Frost 0   1.0mm 11   3h  sun 21   Snow/sleet 0    
Max < 0ēC 0   5mm 3   6h  sun 14   Hail 0    
Max > 10 31   10mm 1   9h  sun 7   Thunder 4    
Max > 20 24   25mm 0   12h sun 2   Fog at 09Z 0    
Max > 30 0         15h sun 0   Gale 0    
                         
Notable events during the month:                  
The period mid-June to mid-July was the coolest since 1981                
Strong northeasterly wind on 7th with a max gust of 44 mph                
Temperature exceeded 21ēC every day from the 14th-31st inclusive