Monthly Climate Summary for  January 2005  at Luton (Cranleigh Gardens)
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                           Another dry month; very mild and changeable till the 21st, then somewhat colder     back forward
                         
Overall mean temperature was 5.7 ēC which is +1.7 degC compared with the 1971-2000 average  
Mean day maximum (09-21) was 8.3 ēC which is +1.9 degC compared with the 1971-2000 average  
Mean night minimum (21-09) was 3.2 ēC which is +1.5 degC compared with the 1971-2000 average  
Mean 24hr maximum (09-09) was 8.4 ēC                
Mean 24hr minimum (09-09) was 2.4 ēC                
  Highest day max was 13.7 ēC on  the   7                 
  Lowest day max was 3.3 ēC on  the 26            
  Highest night min was 11.4 ēC on  the 10            
  Lowest night min was -3.3 ēC on  the 22            
  Lowest grass min was -8.9 ēC on  the 22            
                         
Total rainfall this month was 28.0 mm which is 41.1 per  cent of the 1971-2000 average    
  Highest daily fall was 4.0 mm on  the 28            
Number of hours with rain was                    
Equiv. TSR rainfall duration was 47.4 hrs which is 69.5 per  cent of the 1971-2000 average    
  Highest no of wet hrs   hrs on  the              
  Highest duration 7.8 hrs on  the 12            
  Mean rainfall intensity 0.59 mm/hr                
                         
Total CS sunshine this month was 60.7 hrs which is 115.4 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 7.2 hrs on  the 12            
                         
Maximum  snow depth  was 0.0 cm on  the  19            
                         
Mean sea-level pressure at 09Z 1022.0 mbar which is +7.4 mbar compared with the 1961-1990 average  
  Highest pressure at 09Z 1035.2 mbar on  the 26            
  Lowest  pressure at 09Z 996.5 mbar on  the 18            
                         
Number of days with:                      
Air Frost 4   0.2mm rain 19   No  sun 8   Snow lying 0    
Grnd Frost 21   1.0mm 11   3h  sun 9   Snow/sleet 4    
Max < 0ēC 0   5mm 0   6h  sun 3   Hail 1    
Max > 10 10   10mm 0   9h  sun 0   Thunder 0    
Max > 20 0   25mm 0   12h sun 0   Fog at 09Z 1    
Max > 30 0         15h sun 0   Gale 1    
                         
Notable events during the month:                  
Very windy overnight 7th/8th, maximum gust 60kn.                
Sunshine duration of 7.2h on the 12th was the highest ever recorded in the first half of January