Monthly Climate Summary for  January 2003  at Luton (Cranleigh Gardens)
                           
                      A two-faced month;  cold snaps  3rd-12th and 29th onwards. Quite sunny.    
                        home daily
Overall mean temperature was 4.0 ēC which is 0.0 degC compared with the 1971-2000 average back forward
Mean day maximum (09-21) was 6.4 ēC which is 0.0 degC compared with the 1971-2000 average    
Mean night minimum (21-09) was 1.6 ēC which is -0.1 degC compared with the 1971-2000 average    
Mean 24hr maximum (09-09) was 6.6 ēC                  
Mean 24hr minimum (09-09) was 1.2 ēC                  
  Highest day max was 12.7 ēC on  the   25              
  Lowest day max was -0.1 ēC on  the 7              
  Highest night min was 7.8 ēC on  the 15              
  Lowest night min was -7.1 ēC on  the 12              
  Lowest grass min was -9.6 ēC on  the 12              
                           
Total rainfall this month was 91.1 mm which is 133.8 per  cent of the 1971-2000 average      
  Highest daily fall was 20.1 mm on  the 1              
Number of hours with rain was                      
Dynes' TSR rainfall duration was 81.6 hrs which is 126.9 per  cent of the 1971-2000 average      
  Highest no of wet hrs   hrs on  the                
  Highest duration 12.5 hrs on  the 21              
  Mean rainfall intensity 1.12 mm/hr                  
                           
Total CS sunshine this month was 64.4 hrs which is 136.0 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 5.4 hrs on  the 23              
                           
Maximum  snow depth  was 7.0 cm on  the  31              
                           
Mean sea-level pressure at 09Z 1014.8 mbar which is 0.2 mbar compared with the 1961-1990 average    
  Highest pressure at 09Z 1037.0 mbar on  the 24              
  Lowest  pressure at 09Z 981.0 mbar on  the 2              
                           
Number of days with:                        
Air Frost 13   0.2mm rain 17   No  sun 8   Snow lying 3      
Grnd Frost 17   1.0mm 13   3h  sun 10   Snow/sleet 6      
Max < 0ēC 1   5mm 7   6h  sun 0   Hail 1      
Max > 10 6   10mm 3   9h  sun 0   Thunder 0      
Max > 20 0   25mm 0   12h sun 0   Fog at 09Z 2      
Max > 30 0         15h sun 0   Gale 0      
                           
Notable events during the month:                    
Moderate snow 1330-1730 gmt on the 30th, leaving 8cm on the ground;  traffic chaos