Royston (Iceni) Weather Station

Daily Weather Observations - July 2005

(All Times GMT)

Differences from average:

Differences from average shown in red. Reference periods used are as follows: Temperature 30 Years 1973/2002; rainfall 30 Years 1971/2000; sunshine 30 Years 1971/2000.

(*The differences from average quoted during the course of the month relate to the cumulative daily averages up to the date of the last observation, not the averages for the month as a whole)

Additional Data:

Rainfall Duration  43.9 hours

Air Frost Duration  NIL hours

Graphs and Charts:

Click on the following links to view this month's graphs and charts.....

1. Daily Maximum, Minimum & Grass Minimum Temperatures

2. Daily Maximum & Minimum Temperatures (with 30 Year Comparative Means)

3. Daily Earth (30 cms Depth) Temperature @ 0900 GMT 4. Daily Rainfall  5.  Daily Sunshine

6. Daily Maximum Gust & Mean Wind Speed  7. Daily Wind Direction @ 0900 GMT

8. Daily Mean MSL Air Pressure  9.  Daily Mean Relative Humidity  10. Thermograph 

11.  Barograph  12.  Hygrograph  13. Anemograph  14. Wind Direction

15.  Sunshine Duration  16. Rainfall Intensity & Duration

July 2005 Weather Review:

......and click on the link below for a text report of the July 2005 weather in Royston

July 2005 Weather Review

July (since 1972) at Royston (Iceni) Weather Station:

Mean day maximum temperature (30 years 1973/2002) 22.2°C

Mean night minimum temperature (30 years 1973/2002) 12.5°C

Highest temperature 33.5°C (3rd July 1976); lowest temperature 6.4°C (30th July 1977)

Lowest grass minimum temperature 2.8°C (13th July 1993)

Hottest July 1983 (Mean temperature 20.3°C); coolest July 1978 (Mean temperature 15.2°C)

Average July rainfall (30 years 1971/2000) 43.2 mm

Wettest July 2002 (Rainfall 104.7 mm); driest July 1984 (Rainfall 8.3 mm)

Wettest Day 30th July 2002 (Rainfall 48.8 mm);

Highest number of "rain days" (0.2 mm or more) 20 (1988); lowest number of "rain days" 6 (1976,1977, 1979, 1984, & 1990)

Highest number of days with thunder 6 (1975, 1982,1983 & 2002)

A lake is an unusual sight in the Royston area due to the excellent drainage of the underlying chalk strata, but this one is about 10 km N of the town in Wimpole Park. This lake was formed in the 1760's as part of Lancelot 'Capability' Brown's changes to the park; it adjoins the eastern end of one of Lord Radnor's original fish ponds (created around 1700) which itself became a more informal lake at about the same time. Today the Chinese Bridge, which can be used as a crossing point to the Folly several hundred metres to the N, separates these two lakes. In the background a few of the rare breeds of sheep which are kept in the Park can just be discerned. This photograph depicts the scene as viewed at 1029 GMT on 12th July 2005.	Motorists passing through Royston on the the A10 London to Kings Lynn road can hardly have failed to notice this fine display of mallow (lavatera) on the eastern side of Melbourn Road during June and July 2005. It is seen here at 1504 GMT on 12th July 2005. This was the same day as the previous picture and as can be seen from both photographs blue sky predominates. A total of 13.2 hours sunshine was recorded for the day. It was also a warm day with a maximum temperature of 25.5°C after an overnight minimum of 13.4°C. At the time of the photograph the temperature was 25.0°C, with a light northerly breeze of mean speed 1 knot gusting to 10 knots drifting down the Melbourn Road towards the position of the photographer.	Cloud is quickly building up in this picture looking westwards towards Heath Farm from the B1039 Royston to Saffron Walden Road some 2 km SE of Royston, at 0837 GMT on 19th July 2005. This acreage of wheat is rapidly maturing and will soon be harvested. Beautiful skies were visible all around at this time but the sunshine which had commenced at 0420 GMT had largely given way to a cloud cover by 0930 GMT. The sunshine total for the day was 6.5 hours. The temperature is 18.4°C (later rising to a maximum of 22.2°C) after an overnight minimum of 12.0°C. The wheat is gently swaying in a light NW wind of mean speed 1 knot occasionally gusting to 10 knots. The month had been rather dry up to this point with only 18.2 millimetres rainfall.(65% of average).

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(This page last updated 9th August 2005 1929 GMT)