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June 2014

June 2014

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

Mean daily maximum: 18.5
Difference from average: +1.0

Mean daily minimum: 10.0
Difference from average: +1.4

Mean air temperature: 14.3
Difference from average: +1.3

Absolute maximum: 22.2 (6th)

Absolute minimum: 6.0 (25th)

Mean grass minimum: 7.8

Absolute grass minimum: 3.2 (25th)

Number of ground frosts: 0

Number of air frosts: 0

Mean soil temperature at 30cm depth: 16.2

Mean soil temperature at 100cm depth: 13.7

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

Total for the month: 55.4
Difference from average: +3.6

Percentage of the average: 107%

Wettest day: 19.0 (7th)

Number of rain days (>0.25mm): 10

Number of wet days (=> 1mm): 8

3-month total rainfall to 30th June: 193.0
Difference from average: +21.0

6-month rainfall total to 30th June: 351.8
Difference from average: +5.6

12-month rainfall total to 30th June: 779.8
Difference from average: +130.8

(averages for 09:00 hours GMT)

Relative Humidity: 78%

(all averages 1961 – 1990)

Total for the month: 114.5 hours
Difference from average: -49.2

Percentage of the average: 70%

Mean daily sunshine: 3.8 hours
Difference from average: -1.7

Sunniest day: 10.6 hours (6th)

Number of days with no recorded sunshine: 1

Cumulative total sunshine since 1st January: 631.3 hours
Difference from average: -58.8


Comments on June 2014
June was a warm month, with night-time temperatures notably above average, no doubt due to the cloudy conditions. It was the highest mean maximum for June since 2010 and the highest mean minimum since 2004 (equal to 2005 and the equal 5th highest on record since 1900). Mean air temperature was the highest since 2006 (equal 13th highest since 1850). Rainfall was almost exactly average for June but it was the 12th dullest June since 1882, reflecting the dominant cyclonic weather conditions for much of the month.

Professor Tim Burt
Department of Geography
Durham University