Monthly Climate Summary for January 2006 at Hampstead  
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             A dry month with variable temperatures: very sunny from the 19th onwards   back forward
                       
Overall mean temperature was 4.4 ēC which is +0.3 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 6.4 ēC              
Mean night minimum (21-09) was 2.7 ēC              
Mean 24hr maximum (09-09) was 6.5 ēC which is -0.1 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 2.4 ēC which is +0.7 degC compared with the 1971-2000 average
  Highest day max was 10.7 ēC on  the   18          
  Lowest day max was 1.5 ēC on  the 7          
  Highest night min was 7.9 ēC on  the 19          
  Lowest night min was -3.5 ēC on  the 25          
  Lowest grass min was -4.9 ēC on  the 28          
                       
Total rainfall this month was 24.0 mm which is 38.1 per  cent of the 1971-2000 average  
  Highest daily fall was 6.6 mm on  the 8          
Number of hours with rain was 52.0 hrs              
Equiv. TSR rainfall duration was 36.4 hrs which is 58.7 per  cent of the 1971-2000 average  
  Highest no of wet hrs 13.0 hrs on  the 8          
  Highest equiv duration 10.8 hrs on  the 8          
Mean rainfall intensity 0.66 mm/h              
                       
Total sunshine this month was 59.8 hrs which is 141.4 per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 65.8 hrs which is 141.4 per  cent of the 1971-2000 average  
  Highest daily sun was 7.6 hrs on  the 24          
                       
Maximum  snow depth  was 0.0 cm              
                       
Mean sea-level pressure at 09Z 1023.4 mbar which is +8.5 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1037.0 mbar on  the 22          
  Lowest  pressure at 09Z 1000.0 mbar on  the 1          
                       
Number of days with:                    
Air Frost 6   0.2mm rain 14   No  sun 10   Snow lying 0  
Grnd Frost 28   1.0mm 7   3h  sun 10   Snow/sleet 4  
Max < 0ēC 0   5mm 1   6h  sun 3   Hail 0  
Max > 10 3   10mm 0   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:                 
Very dull till the 19th then very sunny: 49 hours of sunshine recorded in the last 12 days