Climate Data and Brief Summary for September 2007

Last updated 4th November 2007

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

SCREEN TEMPERATURES °c
                                        Anomaly*       Date
Mean                       12.9          +0.4	
Mean Maximum               16.1          +0.0	
Mean Minimum                9.6          +0.7	
High Maximum               21.4	               	 6th
Low Minimum                 2.1                        27th
Low Maximum                10.5                        27th
High Minimum               14.6                         6th
Low Grass                  -1.5                        18th
Air Frosts                   0            0
Ground Frosts                2           +1
Hours of Frost              0.0

Barometric pressure, 24 hour observations (mbar)
Mean                      1019.2          4.9
Maximum                   1031.3                        6th                               
Minimum                   1005.5                       23rd

PRECIPITATION (mm)
Total                       68.0         -1.6                                            
Rain days (0.2mm or more)   13           -2                                             
Wet days (1.0mm or more)     9           -2 
Maximum Fall                16.2                       19th
Rainfall duration (hrs.)    22.3
 
SUNSHINE

Sun Hours                  122.1        +10.1
Maximum day                 10.8                        3rd
Nil Sun Days                 0

HUMIDITY %

Mean                        87.4
Dry days (60% or less)      12                                                  

WIND (mph)

24hour mean                  4.2
09.00 mean                   5.1
Maximum gust                32.0                        24th 
%North                      27
%North East                  3
%East                        5
%South East                  2
%South                       6
%South West                 17
%West                       10
%North West                 30
%Calm                        0
Hours of calm               39.0

MISCELLANEOUS

Days with:

Sleet/Snow                   0            0
Snow lying (09.00)           0            0
Maximum depth (cm)           0.0                         
Total snow depth (cm)        0.0
Hail                         0
Thunder                      0
Fog (09.00)                  0

Brief summary of the month:
September 2007 was the coolest since 2003 despite temperatures 
being just above average. It was the dullest since 2001 again
despite sunshine hours being above normal with 109% of the average.
It was also the driest since 2005 with 98% of the average rainfall. 


All data taken at 220 metres above sea level


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