Monthly Climate Summary for  August  2009 at Whipsnade (The Lodge),  Beds

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Changeable but rather warm; lengthy dry spells

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Overall mean temperature was

16.5

ºC

which is

+0.6

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

21.0

ºC

which is

+0.5

degC

compared with the 1971-2000 average

Mean night minimum (21-09) was

11.9

ºC

which is

+0.6

degC

compared with the 1971-2000 average

Mean 24hr maximum (09-09) was

21.1

ºC

Mean 24hr minimum (09-09) was

11.9

ºC

Highest day max was

26.5

ºC

on  the

19

Lowest day max was

17.2

ºC

on  the

28

Highest night min was

16.6

ºC

on  the

5

Lowest night min was

7.1

ºC

on  the

22

Lowest grass min was

2.5

ºC

on  the

22

Total rainfall this month was

62.1

mm

which is

112.9

per  cent

of the 1971-2000 average

Highest daily fall was

21.7

mm

on  the

6

Number of hours with rain was

Equiv. TSR rainfall duration was

24.2

hrs

which is

per  cent

of the 1971-2000 average

Highest no of wet hrs

hrs

on  the

Highest duration

7.8

hrs

on  the

6

Mean rainfall intensity

2.57

mm/hr

Total CS sunshine this month was

203.7

hrs

which is

110.1

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

12.0

hrs

on  the

16

Maximum  snow depth  was

0.0

cm

on  the

Mean sea-level pressure at 09Z

1016.3

mbar

which is

+0.2

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1024.0

mbar

on  the

22

Lowest  pressure at 09Z

1006.9

mbar

on  the

24

Number of days with:

Air Frost

0

0.2mm rain

12

No  sun

0

Snow lying

0

Grnd Frost

0

1.0mm

9

3h  sun

25

Snow/sleet

0

Max < 0ºC

0

5mm

4

6h  sun

18

Hail

0

Max > 10

31

10mm

1

9h  sun

11

Thunder

2

Max > 20

23

25mm

0

12h sun

2

Fog at 09Z

2

Max > 30

0

15h sun

0

Gale

0

Notable events during the month: