Skip to main content

July 2010

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

Mean daily maximum: 20.3
Difference from average: +1.0

Mean daily minimum: 11.6
Difference from average: +1.2

Mean air temperature: 16
Difference from average: +1.2

Absolute maximum: 24 (10th)

Absolute minimum: 5.9 (23rd)

Mean grass minimum: 9.6

Absolute grass minimum: 2.9 (23rd)

Number of ground frosts: 0

Number of air frosts: 0

Mean soil temperature at 30cm depth: 17.3

Mean soil temperature at 100cm depth: 15.9

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

Total for the month: 62.0
Difference from average: +10.5

Percentage of the average: 120%

Wettest day: 28.2 (20th)

Number of rain days (>0.25mm): 13

Number of wet days (=> 1mm): 9

3-month total rainfall to 31st July: 160.8
Difference from average: +5.7

6-month rainfall total to 31st July: 309.0
Difference from average: +13.7

12-month rainfall total to 31st July: 698.8
Difference from average: +49.8

(Averages for 09:00 hours GMT)

Relative Humidity: 77%

(all averages 1961 – 1990)

Total for the month: 103.8 hours
Difference from average: -51.1

Percentage of the average: 67%

Mean daily sunshine: 3.3 hours
Difference from average: -1.7

Sunniest day: 8.3 hours (3rd)

Number of days with no recorded sunshine: 0

Cumulative total sunshine since 1st January: 784.1 hours
Difference from average: -60.8


The anemometer remains problematic, no summary results can be provided.


Comments on July 2010
Although July seemed disappointing, temperatures were well above average, both day and night. The overall mean air temperature (16°C) is just in the upper quartile for all July mean temperatures since 1850. Rainfall was just above average, with a notable fall of 28.2mm on the 20th. Probably, the disappointment was mostly in terms of bright sunshine. This was the 10th dullest July on record since 1882, with the least the least sunshine since 2000.

Professor Tim Burt
Department of Geography
Durham University