Monthly Climate Summary for December 1993 at Whipsnade, Beds

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Unsettled, windy, and very wet. Brief wintry spell 25th-28th

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Overall mean temperature was

4.6

ºC

which is

+0.7

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

6.7

ºC

which is

+0.5

degC

compared with the 1971-2000 average

Mean night minimum (21-09) was

2.5

ºC

which is

+1.0

degC

compared with the 1971-2000 average

Mean 24hr maximum (09-09) was

7.2

ºC

Mean 24hr minimum (09-09) was

1.7

ºC

Highest day max was

12.9

ºC

on  the

19

Lowest day max was

-0.3

ºC

on  the

27

Highest night min was

10.2

ºC

on  the

19

Lowest night min was

-2.9

ºC

on  the

27

Lowest grass min was

ºC

on  the

Total rainfall this month was

117.4

mm

which is

165.4

per  cent

of the 1971-2000 average

Highest daily fall was

13.8

mm

on  the

12

Number of hours with rain was

Equiv. TSR rainfall duration was

hrs

which is

per  cent

of the 1971-2000 average

Highest no of wet hrs

hrs

on  the

Highest duration

hrs

on  the

Mean rainfall intensity

mm/hr

Total CS sunshine this month was

56.5

hrs

which is

116.5

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

5.8

hrs

on  the

9

Maximum  snow depth  was

1.0

cm

on  the

22

Mean sea-level pressure at 09Z

1005.2

mbar

which is

-9.4

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1026.4

mbar

on  the

5

Lowest  pressure at 09Z

980.4

mbar

on  the

15

Number of days with:

Air Frost

7

0.2mm rain

23

No  sun

10

Snow lying

1

Grnd Frost

1.0mm

20

3h  sun

11

Snow/sleet

10

Max < 0ºC

1

5mm

9

6h  sun

0

Hail

0

Max > 10

7

10mm

4

9h  sun

0

Thunder

0

Max > 20

0

25mm

0

12h sun

0

Fog at 09Z

3

Max > 30

0

15h sun

0

Gale

3

Notable events during the month:

Snow lay 4cm deep on the morning of the 28th, but a thaw quickly followed