Climate Data and Brief Summary for December 2003

Last updated 3rd January 2004

*Anomalies are based on averages for the period 1971-2000

SCREEN TEMPERATURES °c
                                        Anomaly*       Date
Mean                        3.4          -0.5
Mean Maximum                5.8          -0.4
Mean Minimum                1.0          -0.5
High Maximum               11.1                        13th
Low Minimum                -5.0                        31st
Low Maximum                 0.2                        30th
High Minimum                7.8                        25th
Low Grass                  -7.8                        31st
Air Frosts                  12            2
Ground Frosts               19            2
Hours of Frost            113.5

Barometric pressure, 24 hour observations (mbar)
Mean                      1016.0          3.7
Maximum                   1031.7                        4th                               
Minimum                    991.2                       27th

PRECIPITATION (mm)
Total                      103.9        +23.6                                           
Rain days (0.2mm or more)   17           -2                                            
Wet days (1.0mm or more)    11           -2 
Maximum Fall                22.9                       20th
Rainfall duration (hrs.)    63.4
 
SUNSHINE

Sun Hours                   51.5        +12.6
Maximum day                  6.6                        7th
Nil Sun Days                12

HUMIDITY %

Mean                        92.8
Dry days (60% or less)       0                                                  

WIND (mph)

24hour mean                  3.8
09.00 mean                   3.7
Maximum gust                39.0                       20th 
%North                       3
%North East                  3
%East                        8
%South East                 27
%South                      13
%South West                 10
%West                       10
%North West                 13
%Calm                       13
Hours of calm              158.0

MISCELLANEOUS

Days with:

Sleet/Snow                   6            1 
Snow lying (09.00)           1           -2
Maximum depth (cm)           1.0                       28th   
Total snow depth (cm)        2.0
Hail                         2
Thunder                      0
Fog (09.00)                  3

Brief summary of the month:
December 2003 was a changeable month with cold dry and frosty spells mixed 
with mild and wet spells. The overall mean temperature was below average making 
it the coldest since 2001. After quite a dry year the month was wet with 129% 
of the average rainfall. As with most months in 2003 sunshine totals were well 
above normal with 135% of the average. 

All data taken at 220 metres above sea level


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