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June 2011

June 2011

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

Mean daily maximum: 18.4
Difference from average: +0.9

Mean daily minimum: 8.5
Difference from average: -0.1

Mean air temperature: 13.5
Difference from average: +0.5

Absolute maximum: 26.7 (27th)

Absolute minimum: 2.5 (10th)

Mean grass minimum: 6.3

Absolute grass minimum: -0.7 (10th)

Number of ground frosts: 1

Number of air frosts: 0

Mean soil temperature at 30cm depth: 15.4

Mean soil temperature at 100cm depth: 13.8

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

Total for the month: 48.2
Difference from average: -3.6

Percentage of the average: 93%

Wettest day: 9.4 (23rd)

Number of rain days (>0.25mm): 16

Number of wet days (=> 1mm): 10

3-month total rainfall to 30th June: 88.0
Difference from average: -63.1

6-month rainfall total to 30th June: 219.2
Difference from average: -83.6

12-month rainfall total to 30th June:
Difference from average: +7.6

(Averages for 09:00 hours GMT)

Relative Humidity: %

(all averages 1961 – 1990)

Total for the month: 132.6 hours
Difference from average: -31.1

Percentage of the average: 81%

Mean daily sunshine: 4.3 hours
Difference from average: -1.2

Sunniest day: 11.5 hours (3rd)

Number of days with no recorded sunshine: 1

Cumulative total sunshine since 1st January: 812 hours
Difference from average: +121.9


The mast is still broken, we hope to replace it soon.


Comments on June 2011
June’s weather at Durham was mixed: warm days at the beginning and end of the month, but disappointing temperatures, some cool nights especially, in the middle of the month. It was often cloudy with some rain, although nothing very heavy.

Daytime temperatures were well above average but night-time temperatures just below; overall, mean air temperature was above average therefore. The absolute maximum and absolute minimum were the highest and lowest respectively since 2005. There was the first ground frost in June since 1998.

Rainfall was (just) below average for the 4th month in a row. The 12-month running total is now very close to average, whilst the 3-month and 6-month totals remain well below average.

Sunshine was well below average, but the cumulative total for the year remains well above average.

Professor Tim Burt
Department of Geography
Durham University