Monthly Climate Summary for January 2005 at Hampstead  
                        home daily
                                   Warmest since 1990; very dry and very sunny   back forward
                       
Overall mean temperature was 5.8 ēC which is +1.6 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 8.6 ēC              
Mean night minimum (21-09) was 3.7 ēC              
Mean 24hr maximum (09-09) was 8.6 ēC which is +2.0 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 3.0 ēC which is +1.3 degC compared with the 1971-2000 average
  Highest day max was 13.0 ēC on  the   7          
  Lowest day max was 3.9 ēC on  the 26          
  Highest night min was 11.0 ēC on  the 10          
  Lowest night min was -1.3 ēC on  the 26          
  Lowest grass min was -14.0 ēC on  the 22          
                       
Total rainfall this month was 29.0 mm which is 46.1 per  cent of the 1971-2000 average  
  Highest daily fall was 5.1 mm on  the 10          
Number of hours with rain was 59.0 hrs              
Equiv. TSR rainfall duration was 41.3 hrs which is 66.6 per  cent of the 1971-2000 average  
  Highest no of wet hrs 11.0 hrs on  the 27          
  Highest equiv duration 9.1 hrs on  the 27          
Mean rainfall intensity 0.70 mm/h              
                       
Total sunshine this month was 87.2 hrs which is 206.2 per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 96.0 hrs which is 206.2 per  cent of the 1971-2000 average  
  Highest daily sun was 7.3 hrs on  the 23          
                       
Maximum  snow depth  was 0.0 cm              
                       
Mean sea-level pressure at 09Z 1022.4 mbar which is +7.5 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1033.8 mbar on  the 26          
  Lowest  pressure at 09Z 997.8 mbar on  the 18          
                       
Number of days with:                    
Air Frost 3   0.2mm rain 21   No  sun 4   Snow lying 0  
Grnd Frost 14   1.0mm 9   3h  sun 15   Snow/sleet 4  
Max < 0ēC 0   5mm 1   6h  sun 4   Hail 2  
Max > 10 10   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 1  
                       
Notable events during the month:                 
Warmest January since 1990 and driest since 2000