Monthly Climate Summary for August 2004 at Luton (Cranleigh Gardens)

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A warm and humid month with frequent heavy rain and thunder

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Overall mean temperature was

18.6

ºC

which is

+1.8

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

23.2

ºC

which is

+1.3

degC

compared with the 1971-2000 average

Mean night minimum (21-09) was

14.1

ºC

which is

+2.3

degC

compared with the 1971-2000 average

Mean 24hr maximum (09-09) was

23.2

ºC

Mean 24hr minimum (09-09) was

14.1

ºC

Highest day max was

30.4

ºC

on  the

8

Lowest day max was

18.1

ºC

on  the

29

Highest night min was

19.9

ºC

on  the

9

Lowest night min was

7.7

ºC

on  the

28

Lowest grass min was

5.0

ºC

on  the

28

Total rainfall this month was

110.2

mm

which is

217.8

per  cent

of the 1971-2000 average

Highest daily fall was

24.3

mm

on  the

3

Number of hours with rain was

Equiv. TSR rainfall duration was

50.0

hrs

which is

120.7

per  cent

of the 1971-2000 average

Highest no of wet hrs

hrs

on  the

Highest duration

12.8

hrs

on  the

9

Mean rainfall intensity

2.20

mm/hr

Total CS sunshine this month was

184.3

hrs

which is

99.6

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

13.3

hrs

on  the

7

Maximum  snow depth  was

0.0

cm

on  the

Mean sea-level pressure at 09Z

1010.8

mbar

which is

-5.3

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1021.9

mbar

on  the

1

Lowest  pressure at 09Z

997.9

mbar

on  the

18

Number of days with:

Air Frost

0

0.2mm rain

20

No  sun

0

Snow lying

0

Grnd Frost

0

1.0mm

16

3h  sun

24

Snow/sleet

0

Max < 0ºC

0

5mm

6

6h  sun

13

Hail

0

Max > 10

31

10mm

3

9h  sun

5

Thunder

5

Max > 20

27

25mm

0

12h sun

2

Fog at 09Z

0

Max > 30

1

15h sun

0

Gale

0

Notable events during the month: