Monthly Climate Summary for  May  2007  at Whipsnade (Lodge)

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Dull and exceptionally wet;  variable temperatures

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Overall mean temperature was

11.5

ºC

which is

+0.7

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

15.8

ºC

which is

+0.5

degC

compared with the 1971-2000 average

Mean night minimum (21-09) was

7.1

ºC

which is

+0.9

degC

compared with the 1971-2000 average

Mean 24hr maximum (09-09) was

16.1

ºC

Mean 24hr minimum (09-09) was

7.1

ºC

Highest day max was

24.0

ºC

on  the

24

Lowest day max was

6.4

ºC

on  the

28

Highest night min was

14.7

ºC

on  the

24

Lowest night min was

1.9

ºC

on  the

30

Lowest grass min was

-2.2

ºC

on  the

30

Total rainfall this month was

156.4

mm

which is

284.4

per  cent

of the 1971-2000 average

Highest daily fall was

59.2

mm

on  the

27

Number of hours with rain was

Equiv. TSR rainfall duration was

115.7

hrs

which is

per  cent

of the 1971-2000 average

Highest no of wet hrs

hrs

on  the

Highest duration

24.0

hrs

on  the

27

Mean rainfall intensity

1.35

mm/hr

Total CS sunshine this month was

161.9

hrs

which is

87.6

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

13.6

hrs

on  the

1

Maximum  snow depth  was

0.0

cm

on  the

22

Mean sea-level pressure at 09Z

1011.7

mbar

which is

-3.4

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1023.9

mbar

on  the

23

Lowest  pressure at 09Z

998.0

mbar

on  the

27

Number of days with:

Air Frost

0

0.2mm rain

19

No  sun

3

Snow lying

0

Grnd Frost

4

1.0mm

16

3h  sun

19

Snow/sleet

0

Max < 0ºC

0

5mm

9

6h  sun

11

Hail

1

Max > 10

29

10mm

4

9h  sun

7

Thunder

1

Max > 20

5

25mm

1

12h sun

5

Fog at 09Z

1

Max > 30

0

15h sun

0

Gale

0

Notable events during the month: