Monthly Climate Summary for  June  2011  at Hampstead  
                        home daily
                     Mainly rather cool and changeable; short hot spells early and late   back forward
                       
Overall mean temperature was 15.0 ēC which is -0.1 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 19.7 ēC              
Mean night minimum (21-09) was 10.3 ēC              
Mean 24hr maximum (09-09) was 19.8 ēC which is -0.1 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 10.2 ēC which is -0.2 degC compared with the 1971-2000 average
  Highest day max was 31.0 ēC on  the   27          
  Lowest day max was 13.0 ēC on  the 12          
  Highest night min was 17.5 ēC on  the 27          
  Lowest night min was 6.6 ēC on  the 1          
  Lowest grass min was -0.6 ēC on  the 1          
                       
Total rainfall this month was 103.8 mm which is 176.0 per  cent of the 1971-2000 average  
  Highest daily fall was 18.0 mm on  the 5          
Number of hours with rain was 93.0 hrs              
Equiv. TSR rainfall duration was 65.1 hrs which is 197.3 per  cent of the 1971-2000 average  
  Highest no of wet hrs 18.0 hrs on  the 5          
  Highest equiv duration 14.9 hrs on  the 5          
Mean Rainfall Intensity 1.60 mm/h              
                       
Total sunshine this month was 202.1 hrs which is 111.7 per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 222.4 hrs which is 111.7 per  cent of the 1971-2000 average  
  Highest daily sun was 12.8 hrs on  the 14          
                       
Maximum  snow depth  was 0.0 cm              
                       
Mean sea-level pressure at 09Z 1016.7 mbar which is -0.2 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1035.2 mbar on  the 2          
  Lowest  pressure at 09Z 1002.4 mbar on  the 18          
                       
Number of days with:                    
Air Frost 0   0.2mm rain 16   No  sun 0   Snow lying 0  
Grnd Frost 1   1.0mm 12   3h  sun 25   Snow/sleet 0  
Max < 0ēC 0   5mm 9   6h  sun 21   Hail 0  
Max > 10 30   10mm 4   9h  sun 6   Thunder 1  
Max > 20 12   25mm 0   12h sun 3   Fog at 09Z 0  
Max > 30 1         15h sun 0   Gale 0  
                       
Notable events during the month: