Monthly Climate Summary for February 2010 at Hampstead

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Mostly rather cold and cloudy;  heavy rain at times, and some snow

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Overall mean temperature was

3.1

ºC

which is

-1.3

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

5.4

ºC

Mean night minimum (21-09) was

1.0

ºC

Mean 24hr maximum (09-09) was

5.6

ºC

which is

-1.6

degC

compared with the 1971-2000 average

Mean 24hr minimum (09-09) was

0.6

ºC

which is

-0.9

degC

compared with the 1971-2000 average

Highest day max was

11.4

ºC

on  the

5

Lowest day max was

1.0

ºC

on  the

8

Highest night min was

6.4

ºC

on  the

4

Lowest night min was

-2.5

ºC

on  the

20

Lowest grass min was

-6.2

ºC

on  the

20

Total rainfall this month was

108.2

mm

which is

270.6

per  cent

of the 1971-2000 average

Highest daily fall was

22.4

mm

on  the

16

Number of hours with rain was

135.0

hrs

Equiv. TSR rainfall duration was

94.5

hrs

which is

201.1

per  cent

of the 1971-2000 average

Highest no of wet hrs

19.0

hrs

on  the

16

Highest equiv duration

15.8

hrs

on  the

16

Mean rainfall intensity

1.15

mm/h

Total sunshine this month was

52.4

hrs

which is

85.6

per  cent

of the 1971-2000 average

Equiv. C/S sunshine total was

57.6

hrs

which is

85.6

per  cent

of the 1971-2000 average

Highest daily sun was

6.9

hrs

on  the

1

Maximum  snow depth  was

0.0

cm

on the

1

Mean sea-level pressure at 09Z

1003.3

mbar

which is

-12.1

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1023.7

mbar

on  the

7

Lowest  pressure at 09Z

982.4

mbar

on  the

28

Number of days with:

Air Frost

12

0.2mm rain

25

No  sun

5

Snow lying

0

Grnd Frost

17

1.0mm

16

3h  sun

10

Snow/sleet

12

Max < 0ºC

0

5mm

5

6h  sun

1

Hail

1

Max > 10

1

10mm

3

9h  sun

0

Thunder

0

Max > 20

0

25mm

0

12h sun

0

Fog at 09Z

1

Max > 30

0

15h sun

0

Gale

0

Notable events during the month: