Monthly Climate Summary for  June  2010  at Hampstead

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Mostly dry  and sunny with warm periods

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Overall mean temperature was

16.6

ºC

which is

+1.4

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

21.9

ºC

Mean night minimum (21-09) was

11.2

ºC

Mean 24hr maximum (09-09) was

22.0

ºC

which is

+2.1

degC

compared with the 1971-2000 average

Mean 24hr minimum (09-09) was

11.1

ºC

which is

+0.7

degC

compared with the 1971-2000 average

Highest day max was

29.6

ºC

on  the

27

Lowest day max was

13.0

ºC

on  the

1

Highest night min was

16.2

ºC

on  the

30

Lowest night min was

6.1

ºC

on  the

20

Lowest grass min was

2.3

ºC

on  the

20

Total rainfall this month was

29.0

mm

which is

49.2

per  cent

of the 1971-2000 average

Highest daily fall was

8.8

mm

on  the

7

Number of hours with rain was

37.0

hrs

Equiv. TSR rainfall duration was

25.9

hrs

which is

78.5

per  cent

of the 1971-2000 average

Highest no of wet hrs

11.0

hrs

on  the

1

Highest equiv duration

9.1

hrs

on  the

1

Mean Rainfall Intensity

1.12

mm/h

Total sunshine this month was

200.3

hrs

which is

110.7

per  cent

of the 1971-2000 average

Equiv. C/S sunshine total was

220.4

hrs

which is

110.7

per  cent

of the 1971-2000 average

Highest daily sun was

12.3

hrs

on  the

28

Maximum  snow depth  was

0.0

cm

Mean sea-level pressure at 09Z

1018.9

mbar

which is

+2.0

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1028.5

mbar

on  the

15

Lowest  pressure at 09Z

1002.5

mbar

on  the

8

Number of days with:

Air Frost

0

0.2mm rain

9

No  sun

1

Snow lying

0

Grnd Frost

0

1.0mm

7

3h  sun

26

Snow/sleet

0

Max < 0ºC

0

5mm

3

6h  sun

15

Hail

0

Max > 10

30

10mm

0

9h  sun

9

Thunder

0

Max > 20

17

25mm

0

12h sun

5

Fog at 09Z

0

Max > 30

0

15h sun

0

Gale

0

Notable events during the month: