JULY 1997
With fog reported at some time during the twenty-four hours on every day except the 27th this was the foggiest month ever recorded on Fair Isle! During the month visibility was less than 1000 metres for a total of 282 hours.
With the rainfall total 56.6% of the long-term (1974-96) average it was a dry month and also rather cloudy - the sunshine total 87.7% of normal.
 | Daily Data |
| Weather Diary |
1997 Day 1974-96 1997 Day 1974-96 Mean Max Temperature 13.7 13.1 Highest Max temp 17.0 22 20.1 Mean Min Temperature 10.8 9.8 Lowest Min temp 7.4 1 4.2 Mean Sea Temperature 12.3 11.1 Lowest grass minimum 3.0 15 -1.8 30 cm Earth temperature 12.9 11.8 Days with ground frost 0 0.3 100cm Earth temperature 11.2 10.6 Days with air frost 0 0.0 Total Rainfall (mm) 28.0 49.6 Days with snow/sleet 0 0.0 Wettest Day (mm) 5.8 29 12.8 Days snow cover at 09hr 0 0.0 Rain Days ( 0.1mm +) 13 16.7 Days with hail 0 0.0 Wet Days (0.9mm +) 10 10.0 Days fog during 24hrs 30 14.5 Total sunshine, hrs 119.6 136.3 Days with fog at 09hrs 12 4.5 Sunniest day, hrs 14.7 31 14.4 Days with NIL sun 10 5.0 Mean wind speed, kts 9.2 11.5 Days with gale 0 0.3 Maximum gust, kts 48 1 42.0 Days with thunder 0 0.6 Mean Sea Level pressure 1016.3 1013.7 Days with aurora 0 0.0 Wind Direction% North 3.2 8.5 S. West 16.1 13.0 N. East 6.5 4.3 West 22.6 17.4 East 12.9 11.7 N. West 0.0 13.5 S. East 35.5 16.9 South 3.2 11.9 CALM 0.0 1.5
- To be uploaded later
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