November 2004

Temperatures
(all temperatures in degrees Celsius; all averages 1961 – 1990)

Mean daily maximum: 10.3
Difference from average: +1.6

Mean daily minimum: 4.3
Difference from average: +1.5

Mean air temperature: 7.3
Difference from average: +1.6

Absolute maximum: 13.7 (8th)

Absolute minimum: -4.9 (21st)

Mean grass minimum: 1.6

Absolute grass minimum: -10.0 (21st)

Number of ground frosts: 13

Number of air frosts: 6

Mean soil temperature at 30cm depth: 8.7

Mean soil temperature at 100cm depth: 10.8

Rainfall
(all totals in millimetres; all averages 1961 – 1990)

Total for the month: 14.4
Difference from average: -47.6

Percentage of the average: 23%

Wettest day: 3.4 (29th)

Number of rain days (>0.25mm): 13

Number of wet days (=> 1mm): 3

3-month total rainfall to 30th November: 154.4
Difference from average: -17.3

6-month rainfall total to 30th November: 444
Difference from average: +103.2

12-month rainfall total to 30th November: 785
Difference from average: +136

Humidity
(Averages for 09:00 hours GMT)

Relative Humidity: 83.1%

Sunshine
(all averages 1961 – 1990)

Total for the month: 52.4 hours
Difference from average: -13.7

Percentage of the average: 79.2%

Mean daily sunshine: 1.7 hours
Difference from average: -0.5

Sunniest day: 6.3 hours (13th)

Number of days with no recorded sunshine: 5

Cumulative total sunshine since 1st January: 1113.7 hours
Difference from average: -169.9

Wind

The mean wind speed: 14.1km/h [7.6kt]
Difference from average: +0.6km/hr

The highest gust: 70.4km/h [38kt] from 260° at 11.28 GMT on 22nd

ISSN1350-483

Comments on November 2004
November was another warm month, the 14th warmest November since 1850, although last year and 2001 were both warmer. Most remarkably, it was a very dry month, only 14.4mm, the second lowest November total on record since 1852. Nonetheless, there was a little less sunshine than normal, and the cumulative total for the year remains well below average.

Professor Tim Burt
Department of Geography
Durham University