Monthly Climate Summary for  July  2009  at Whipsnade (The Lodge)

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Very warm start, then very unsettled with near-average temperature

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Overall mean temperature was

16.1

ºC

which is

+0.2

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

20.5

ºC

which is

-0.1

degC

compared with the 1971-2000 average

Mean night minimum (21-09) was

11.6

ºC

which is

+0.4

degC

compared with the 1971-2000 average

Mean 24hr maximum (09-09) was

20.5

ºC

Mean 24hr minimum (09-09) was

11.6

ºC

Highest day max was

27.6

ºC

on  the

1

Lowest day max was

17.0

ºC

on  the

9

Highest night min was

16.2

ºC

on  the

3

Lowest night min was

7.7

ºC

on  the

9

Lowest grass min was

3.8

ºC

on  the

9

Total rainfall this month was

73.2

mm

which is

149.4

per  cent

of the 1971-2000 average

Highest daily fall was

11.6

mm

on  the

17

Number of hours with rain was

TSR rainfall duration was

43.4

hrs

which is

per  cent

of the 1971-2000 average

Highest no of wet hrs

hrs

on  the

Highest duration

10.3

hrs

on  the

Mean rainfall intensity

1.69

mm/hr

Total CS sunshine this month was

210.9

hrs

which is

110.8

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

13.0

hrs

on  the

2

Maximum  snow depth  was

0.0

cm

on  the

Mean sea-level pressure at 09Z

1012.6

mbar

which is

-4.7

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1023.6

mbar

on  the

1

Lowest  pressure at 09Z

1002.4

mbar

on  the

22

Number of days with:

Air Frost

0

0.2mm rain

20

No  sun

1

Snow lying

0

Grnd Frost

0

1.0mm

13

3h  sun

24

Snow/sleet

0

Max < 0ºC

0

5mm

7

6h  sun

19

Hail

0

Max > 10

31

10mm

1

9h  sun

11

Thunder

3

Max > 20

16

25mm

0

12h sun

2

Fog at 09Z

0

Max > 30

0

15h sun

0

Gale

0

Notable events during the month:

20th