Fair Isle Weather - July 1999

[Summary].

[Details}

Daily Data
Weather Diary

 

1999

Day

1974-98

1999

Day

1974-98

Mean Maximum Temperature

13.4

13.1

Highest Max temp

15.1

8

20.1

Mean Minimum Temperature

10.0

9.8

Lowest Min temp

8.1

3

4.2

Mean Sea Temperature

12.3

11.2

Lowest grass minimum

4.3

19

-1.8

30 cm Earth temperature

13.0

11.9

Days with ground frost

0

0.3

100cm Earth temperature

11.6

10.6

Days with air frost

0

0.0

Total Rainfall (mm)

41.6

51.6

Days with snow/sleet

0

0.0

Wettest Day (mm)

16.9

22

13.2

Days with snow cover at 09hr

0

0.0

Rain Days (> 0.1mm)

17

17.0

Days with hail

0

0.0

Wet Days (> 0.9mm)

12

10.4

Days with fog during 24hrs

13

14.9

Total sunshine, hrs

124.9

137.0

Days with fog at 09hrs

6

4.6

Sunniest day, hrs

11.7

11

14.5

Days with NIL sun

7

5.3

Mean wind speed, kts

12.5

11.4

Days with gale

0

0.2

Maximum gust, kts

35

17

41.8

Days with thunder

0

0.6

Mean Sea Level pressure

1014.5

1013.3

Days with aurora

0

0.0

Wind Direction (%)          North

6.5

8.8

Wind Direction (%)   S. West

16.1

12.9

at 09 hr                      N. East

0.0

4.2

at 09 hr                       West

22.6

18.2

East

12.9

11.8

N. West

9.7

13.7

S. East

22.6

17.4

South

9.7

11.5

CALM

0.0

1.4

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Last edited on 20 September, 1999   Dave Wheeler weatherman@zetnet.co.uk
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