Monthly Climate Summary for December 2003 at Luton (Cranleigh Gardens)

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Rather sunny;  temperature and rainfall near normal

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Overall mean temperature was

4.8

ºC

which is

-0.1

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

7.0

ºC

which is

-0.1

degC

compared with the 1971-2000 average

Mean night minimum (21-09) was

2.5

ºC

which is

-0.2

degC

compared with the 1971-2000 average

Mean 24hr maximum (09-09) was

7.4

ºC

Mean 24hr minimum (09-09) was

1.7

ºC

Highest day max was

13.3

ºC

on  the

12

Lowest day max was

1.7

ºC

on  the

22

Highest night min was

11.3

ºC

on  the

13

Lowest night min was

-4.6

ºC

on  the

16

Lowest grass min was

-7.1

ºC

on  the

16

Total rainfall this month was

72.3

mm

which is

106.8

per  cent

of the 1971-2000 average

Highest daily fall was

10.0

mm

on  the

31

Number of hours with rain was

Equiv. TSR rainfall duration was

102.0

hrs

which is

140.0

per  cent

of the 1971-2000 average

Highest no of wet hrs

hrs

on  the

Highest duration

18.0

hrs

on  the

12

Mean rainfall intensity

0.71

mm/hr

Total CS sunshine this month was

59.1

hrs

which is

121.9

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

7.0

hrs

on  the

7

Maximum  snow depth  was

0.0

cm

on  the

Mean sea-level pressure at 09Z

1017.3

mbar

which is

+2.7

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1032.5

mbar

on  the

7

Lowest  pressure at 09Z

996.0

mbar

on  the

28

Number of days with:

Air Frost

12

0.2mm rain

21

No  sun

13

Snow lying

0

Grnd Frost

18

1.0mm

14

3h  sun

8

Snow/sleet

3

Max < 0ºC

0

5mm

8

6h  sun

4

Hail

1

Max > 10

6

10mm

1

9h  sun

0

Thunder

0

Max > 20

0

25mm

0

12h sun

0

Fog at 09Z

3

Max > 30

0

15h sun

0

Gale

0

Notable events during the month: