Monthly Climate Summary for March 2004 at Hampstead  
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        Rather cold first half and again 23rd-28th;  brief warm spells around 16th and 31st Back Forward
Overall mean temperature was 6.7 ēC which is +0.2 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 10.0 ēC
Mean night minimum (21-09) was 3.5 ēC
Mean 24hr maximum (09-09) was 10.1 ēC which is +0.1 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 3.3 ēC which is +0.3 degC compared with the 1971-2000 average
Highest day max was 18.7 ēC on  the   31
Lowest day max was 4.3 ēC on  the 10
Highest night min was 10.4 ēC on  the 16
Lowest night min was -3.3 ēC on  the 2
Lowest grass min was -11.5 ēC on  the 2
Total rainfall this month was 33.2 mm which is 65.1 per  cent of the 1971-2000 average
Highest daily fall was 12.1 mm on  the 12
Number of hours with rain was 56.0 hrs
Equiv. TSR rainfall duration was 39.2 hrs which is 85.2 per  cent of the 1971-2000 average
Highest no of wet hrs 13.0 hrs on  the 12
Highest equiv duration 10.4 hrs on  the 12
Total sunshine this month was 95.7 hrs which is 95.8 per  cent of the 1971-2000 average
Equiv. C/S sunshine total was 105.2 hrs which is 95.8 per  cent of the 1971-2000 average
Highest daily sun was 10.1 hrs on  the 30
Maximum  snow depth  was 4.0 cm 12
Mean sea-level pressure at 09Z 1020.8 mbar which is 6.0 mbar compared with the 1961-1990 average
Highest pressure at 09Z 1036.2 mbar on  the 2
Lowest  pressure at 09Z 1003.8 mbar on  the 21
Number of days with:
Air Frost 5 0.2mm rain 17 No  sun 4 Snow lying 2
Grnd Frost 12 1.0mm 9 3h  sun 15 Snow/sleet 3
Max < 0ēC 0 5mm 1 6h  sun 5 Hail 1
Max > 10 14 10mm 1 9h  sun 1 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:                
Max of 18.7ēC on the 31st was the highest in March (equal with last year) since 1999        
Min of -3.3ēC on the 2nd was the lowest in March since 2001