Monthly Climate Summary for October 2011 at Hampstead  
                        home daily
                     Exceptionally warm start, mostly mild, dry and quite sunny     back forward
                       
Overall mean temperature was 13.4 ēC which is +2.2 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 16.7 ēC              
Mean night minimum (21-09) was 10.1 ēC              
Mean 24hr maximum (09-09) was 16.8 ēC which is +2.6 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 9.9 ēC which is +1.8 degC compared with the 1971-2000 average
  Highest day max was 28.3 ēC on  the   1          
  Lowest day max was 11.4 ēC on  the 26          
  Highest night min was 16.1 ēC on  the 2          
  Lowest night min was 1.5 ēC on  the 20          
  Lowest grass min was -2.5 ēC on  the 20          
                       
Total rainfall this month was 21.6 mm which is 31.2 per  cent of the 1971-2000 average  
  Highest daily fall was 5.7 mm on  the 5          
Number of hours with rain was 35.0 hrs              
Equiv. TSR rainfall duration was 24.5 hrs which is 57.0 per  cent of the 1971-2000 average  
  Highest no of wet hrs 8.0 hrs on  the 8          
  Highest equiv duration 6.6 hrs on  the 8          
Mean rainfall intensity   0.88 mm/h              
                       
Total sunshine this month was 137.9 hrs which is 138.0 per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 151.7 hrs which is 138.0 per  cent of the 1971-2000 average  
  Highest daily sun was 9.6 hrs on  the 1          
                       
Maximum  snow depth  was 0.0 cm on the            
                       
Mean sea-level pressure at 09Z 1018.9 mbar which is +3.2 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1032.8 mbar on  the 14          
  Lowest  pressure at 09Z 998.2 mbar on  the 25          
                       
Number of days with:                    
Air Frost 0   0.2mm rain 8   No  sun 1   Snow lying 0  
Grnd Frost 5   1.0mm 8   3h  sun 18   Snow/sleet 0  
Max < 0ēC 0   5mm 1   6h  sun 13   Hail 0  
Max > 10 31   10mm 0   9h  sun 4   Thunder 0  
Max > 20 3   25mm 0   12h sun 0   Fog at 09Z 0  
Max > 30 0         15h sun 0   Gale 0  
                       
Notable events during the month: