Monthly Climate Summary for December 2008 at Whipsnade (Lodge)

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Cold first half, milder interlude before Christmas, cold last week. Mainly dry, especially second half

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Overall mean temperature was

2.6

ºC

which is

-1.3

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

4.6

ºC

which is

-1.6

degC

compared with the 1971-2000 average

Mean night minimum (21-09) was

0.5

ºC

which is

-1.0

degC

compared with the 1971-2000 average

Mean 24hr maximum (09-09) was

5.0

ºC

Mean 24hr minimum (09-09) was

0.1

ºC

Highest day max was

11.1

ºC

on  the

20

Lowest day max was

-1.0

ºC

on  the

31

Highest night min was

8.7

ºC

on  the

22

Lowest night min was

-6.2

ºC

on  the

30

Lowest grass min was

-11.1

ºC

on  the

30

Total rainfall this month was

41.7

mm

which is

58.7

per  cent

of the 1971-2000 average

Highest daily fall was

15.2

mm

on  the

13

Number of hours with rain was

TSR rainfall duration was

52.8

hrs

which is

per  cent

of the 1971-2000 average

Highest no of wet hrs

hrs

on  the

Highest duration

15.0

hrs

on  the

Mean rainfall intensity

0.79

mm/hr

Total CS sunshine this month was

59.0

hrs

which is

121.6

per  cent

of the 1971-2000 average

Equiv. C/S sunshine total was

hrs

which is

per  cent

of the 1971-2000 average

Highest daily sun was

6.6

hrs

on  the

7

Maximum  snow depth  was

0.0

cm

on  the

Mean sea-level pressure at 09Z

1018.9

mbar

which is

+4.3

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1038.6

mbar

on  the

26

Lowest  pressure at 09Z

979.3

mbar

on  the

4

Number of days with:

Air Frost

17

0.2mm rain

11

No  sun

11

Snow lying

0

Grnd Frost

23

1.0mm

6

3h  sun

9

Snow/sleet

5

Max < 0ºC

1

5mm

3

6h  sun

2

Hail

0

Max > 10

3

10mm

1

9h  sun

0

Thunder

0

Max > 20

0

25mm

0

12h sun

0

Fog at 09Z

7

Max > 30

0

15h sun

0

Gale

0

Notable events during the month: