Monthly Climate Summary for February 1991  at Whipsnade, Beds

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daily

Very cold and wintry till the 20th, then much milder

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forward

Overall mean temperature was

0.4

ºC

which is

-2.6

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

3.0

ºC

which is

-2.8

degC

compared with the 1971-2000 average

Mean night minimum (21-09) was

-2.2

ºC

which is

-2.4

degC

compared with the 1971-2000 average

Mean 24hr maximum (09-09) was

3.3

ºC

Mean 24hr minimum (09-09) was

-2.5

ºC

Highest day max was

12.2

ºC

on  the

25

Lowest day max was

-4.7

ºC

on  the

7

Highest night min was

7.5

ºC

on  the

23

Lowest night min was

-9.4

ºC

on  the

7

Lowest grass min was

-18.0

ºC

on  the

10

Total rainfall this month was

55.7

mm

which is

111.4

per  cent

of the 1971-2000 average

Highest daily fall was

21.1

mm

on  the

27

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

57.7

hrs

which is

82.2

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

8.4

hrs

on  the

19

Maximum  snow depth  was

24.0

cm

on  the

22

Mean sea-level pressure at 09Z

1017.4

mbar

which is

2.2

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1036.3

mbar

on  the

5

Lowest  pressure at 09Z

1001.5

mbar

on  the

15

Number of days with:

Air Frost

21

0.2mm rain

16

No  sun

9

Snow lying

15

Grnd Frost

25

1.0mm

8

3h  sun

7

Snow/sleet

12

Max < 0ºC

9

5mm

3

6h  sun

3

Hail

0

Max > 10

3

10mm

2

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:

Snow fell for much of the 8th and 9th with the temp around -5ºC; this was the deepest snowfall here since Jan 1982