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July 2014

July 2014

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

Mean daily maximum: 21.4
Difference from average: +2.1

Mean daily minimum: 11.5
Difference from average: +1.1

Mean air temperature: 16.5
Difference from average: +1.7

Absolute maximum: 27.0 (26th)

Absolute minimum: 6.5 (6th)

Mean grass minimum: 9.9

Absolute grass minimum: 3.7 (6th)

Number of ground frosts: 0

Number of air frosts: 0

Mean soil temperature at 30cm depth: 17.8

Mean soil temperature at 100cm depth: 15.4

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

Total for the month: 49.2
Difference from average: -2.4

Percentage of the average: 95.3%

Wettest day: 16.4 (5th)

Number of rain days (>0.25mm): 12

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

3-month total rainfall to 31st July: 192.8
Difference from average: +20.8

6-month rainfall total to 31st July: 309.8
Difference from average: -36.4

12-month rainfall total to 31st July: 776.6
Difference from average: +127.6

(averages for 09:00 hours GMT)

Relative Humidity: 76.5%

(all averages 1961 – 1990)

Total for the month: 170.3 hours
Difference from average: +15.4

Percentage of the average: 110%

Mean daily sunshine: 5.5 hours
Difference from average: +0.5

Sunniest day: 10.5 hours (9th)

Number of days with no recorded sunshine: 0

Cumulative total sunshine since 1st January: 801.6 hours
Difference from average: -44.3


Comments on July 2014
Maybe not as warm as last July but nevertheless this was the 9th warmest July on record at Durham since 1850. The mean maximum was the 16th highest since 1900. Rainfall was just about average with only one notable daily total, 16.4mm on the 5th. Total sunshine was above average. All in all, a very pleasant month!

Professor Tim Burt
Department of Geography
Durham University