Monthly Climate Summary for  April  2007  at Hampstead  
                        home daily
                 The warmest April on record, and one of the driest and sunniest too   back forward
                       
Overall mean temperature was 12.5 ēC which is +4.1 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 17.8 ēC              
Mean night minimum (21-09) was 7.1 ēC              
Mean 24hr maximum (09-09) was 17.8 ēC which is +5.4 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 7.1 ēC which is +2.7 degC compared with the 1971-2000 average
  Highest day max was 21.2 ēC on  the   15          
  Lowest day max was 7.0 ēC on  the 3          
  Highest night min was 12.3 ēC on  the 25          
  Lowest night min was -2.5 ēC on  the 4          
  Lowest grass min was -13.2 ēC on  the 5          
                       
Total rainfall this month was 4.0 mm which is 7.1 per  cent of the 1971-2000 average  
  Highest daily fall was 2.2 mm on  the 25          
Number of hours with rain was 9.0 hrs              
Equiv. TSR rainfall duration was 6.3 hrs which is 15.0 per  cent of the 1971-2000 average  
  Highest no of wet hrs 11.0 hrs on  the 25          
  Highest equiv duration 9.1 hrs on  the 25          
                       
Total sunshine this month was 220.2 hrs which is 172.3 per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 242.3 hrs which is 172.3 per  cent of the 1971-2000 average  
  Highest daily sun was 10.9 hrs on  the 21          
                       
Maximum  snow depth  was 0.0 cm              
                       
Mean sea-level pressure at 09Z 1024.0 mbar which is 8.8 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1031.2 mbar on  the 2          
  Lowest  pressure at 09Z 994.7 mbar on  the 25          
                       
Number of days with:                    
Air Frost 0   0.2mm rain 4   No  sun 0   Snow lying 0  
Grnd Frost 6   1.0mm 1   3h  sun 27   Snow/sleet 0  
Max < 0ēC 0   5mm 0   6h  sun 19   Hail 0  
Max > 10 29   10mm 0   9h  sun 12   Thunder 0  
Max > 20 8   25mm 0   12h sun 0   Fog at 09Z 0  
Max > 30 0         15h sun 0   Gale 0  
                       
Notable events during the month: