Monthly Climate Summary for  March  2010 at Hampstead

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First half cold, dry and sunny;  second half mild, cloudy with frequent rain

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Overall mean temperature was

6.6

ºC

which is

+0.1

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

10.4

ºC

Mean night minimum (21-09) was

3.2

ºC

Mean 24hr maximum (09-09) was

10.2

ºC

which is

+0.2

degC

compared with the 1971-2000 average

Mean 24hr minimum (09-09) was

3.1

ºC

which is

+0.1

degC

compared with the 1971-2000 average

Highest day max was

16.3

ºC

on  the

18

Lowest day max was

4.1

ºC

on  the

7

Highest night min was

10.4

ºC

on  the

20

Lowest night min was

-4.0

ºC

on  the

7

Lowest grass min was

-7.1

ºC

on  the

7

Total rainfall this month was

45.7

mm

which is

89.7

per  cent

of the 1971-2000 average

Highest daily fall was

7.6

mm

on  the

23

Number of hours with rain was

79.0

hrs

Equiv. TSR rainfall duration was

55.3

hrs

which is

115.2

per  cent

of the 1971-2000 average

Highest no of wet hrs

13.0

hrs

on  the

20

Highest equiv duration

10.8

hrs

on  the

20

Mean rainfall intensity

0.83

mm/h

Total sunshine this month was

123.9

hrs

which is

124.0

per  cent

of the 1971-2000 average

Equiv. C/S sunshine total was

136.3

hrs

which is

124.0

per  cent

of the 1971-2000 average

Highest daily sun was

8.1

hrs

on  the

7

Maximum  snow depth  was

cm

on the

Mean sea-level pressure at 09Z

1017.4

mbar

which is

+2.6

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1033.9

mbar

on  the

7

Lowest  pressure at 09Z

986.0

mbar

on  the

31

Number of days with:

Air Frost

5

0.2mm rain

14

No  sun

0

Snow lying

0

Grnd Frost

17

1.0mm

12

3h  sun

18

Snow/sleet

0

Max < 0ºC

0

5mm

5

6h  sun

11

Hail

0

Max > 10

20

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

0

Notable events during the month: