Monthly Climate Summary for January 2008 at Hampstead  
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                   Another unsettled, wet, and very mild January;  very nearly frost-free   back forward
                       
Overall mean temperature was 6.7 ēC which is +2.5 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 9.2 ēC              
Mean night minimum (21-09) was 4.8 ēC              
Mean 24hr maximum (09-09) was 9.4 ēC which is +2.8 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 3.9 ēC which is +2.2 degC compared with the 1971-2000 average
  Highest day max was 13.3 ēC on  the   20          
  Lowest day max was 2.2 ēC on  the 3          
  Highest night min was 11.7 ēC on  the 19          
  Lowest night min was -0.3 ēC on  the 3          
  Lowest grass min was -3.2 ēC on  the 17          
                       
Total rainfall this month was 82.7 mm which is 131.3 per  cent of the 1971-2000 average  
  Highest daily fall was 11.4 mm on  the 11          
Number of hours with rain was 105.0 hrs              
Equiv. TSR rainfall duration was 73.5 hrs which is 118.6 per  cent of the 1971-2000 average  
  Highest no of wet hrs 11.0 hrs on  the 11          
  Highest equiv duration 9.1 hrs on  the 11          
Mean rainfall intensity 1.13 mm/h              
                       
Total sunshine this month was 70.4 hrs which is 166.4 per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 77.4 hrs which is 166.4 per  cent of the 1971-2000 average  
  Highest daily sun was 7.1 hrs on  the 27          
                       
Maximum  snow depth  was 0.0 cm on the            
                       
Mean sea-level pressure at 09Z 1013.4 mbar which is -1.5 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1036.4 mbar on  the 25          
  Lowest  pressure at 09Z 985.0 mbar on  the 15          
                       
Number of days with:                    
Air Frost 1   0.2mm rain 23   No  sun 6   Snow lying 0  
Grnd Frost 9   1.0mm 14   3h  sun 11   Snow/sleet 1  
Max < 0ēC 0   5mm 7   6h  sun 3   Hail 0  
Max > 10 13   10mm 2   9h  sun 0   Thunder 0  
Max > 20 0   25mm 0   12h sun 0   Fog at 09Z 0  
Max > 30 0         15h sun 0   Gale 0  
                       
Notable events during the month: