Royston (Iceni) Weather Station

Daily Weather Observations - June 2007

(All Times GMT)

Date Max. Temp. (°C) 09/09h Min. Temp. (°C) 09/09h Grass Min. Temp. (°C) 21/09h Earth (30cms) Temp. (°C) 09h Sun (Hours) 00/00h R'fall (MM) 09/09h Wind Dir'n 09h Mean Wind Speed (MPH) 00/00h Max. Gust Speed (MPH) 00/00h Cloud Cover (Oktas) 09h Mean MSL Air Pressure (mB) 00/00h Mean Rel. Humd. (%) 00/00h Mean Temp. (°C) 00/00h Fog (vis. <1000m @ 09h) Fog (vis. <200m @ 09h) Snow or Rain and Snow 00/00h Snow Lying @ 09h (>50% cover) Hail 00/00h Thunder 00/00h Date
1 22.4 7.0 3.5 14.5 15.3 0.0 NE 0.2 12 1 1015.5 73.5 15.3 0 0 0 0 0 0 1
2 24.1 9.0 5.1 15.5 15.8 0.0 NE 0.1 9 0 1022.0 66.8 17.4 0 0 0 0 0 0 2
3 23.5 11.0 7.7 15.6 14.9 0.1 SE 0.1 12 0 1020.5 76.3 17.4 0 0 0 0 0 0 3
4 21.0 11.1 9.4 17.4 3.7 0.4 N 0.7 18 8 1021.9 86.5 14.9 0 0 0 0 0 0 4
5 20.7 10.8 8.3 16.9 5.9 0.0 N 2.4 21 7 1021.9 86.6 14.3 0 0 0 0 0 0 5
6 14.2 10.4 10.2 17.5 0.0 1.0 NE 2.0 18 8 1019.8 87.6 12.0 0 0 0 0 0 0 6
7 17.2 11.3 11.1 16.7 0.0 TR NE 1.0 16 8 1018.4 96.4 13.1 0 0 0 0 0 0 7
8 19.2 11.2 11.2 16.4 3.8 0.0 N 0.1 12 8 1017.4 92.2 14.1 1 0 0 0 0 0 8
9 25.0 13.5 10.9 16.5 9.7 0.0 N 0.1 12 6 1016.0 80.3 18.9 0 0 0 0 0 0 9
10 22.0 11.1 9.5 17.8 5.3 TR NE 0.2 14 8 1014.5 86.8 16.4 0 0 0 0 0 0 10
11 18.5 13.5 12.5 18.4 0.9 0.0 N 0.1 9 8 1012.5 91.9 15.3 0 0 0 0 0 0 11
12 22.2 14.1 11.0 17.5 5.2 0.0 W 2.3 21 8 1007.8 81.6 18.2 0 0 0 0 0 0 12
13 23.4 13.1 11.5 18.0 5.9 5.4 W 1.3 16 3 1004.1 76.7 18.2 0 0 0 0 0 1 13
14 21.0 14.5 14.3 18.4 0.0 11.4 NE 0.1 12 8 999.4 92.5 17.1 0 0 0 0 0 1 14
15 21.9 15.4 15.2 18.4 6.4 1.3 SW 1.6 18 5 996.1 83.9 16.8 0 0 0 0 0 1 15
16 19.1 12.0 10.5 18.4 3.3 3.1 SW 2.4 23 6 998.0 88.8 15.0 0 0 0 0 0 1 16
17 20.8 11.8 10.8 18.2 3.7 0.7 W 0.5 12 5 1000.9 80.7 16.2 0 0 0 0 0 0 17
18 19.5 12.8 12.2 18.5 1.9 5.8 SE 1.3 28 8 1004.2 86.4 15.7 0 0 0 0 0 1 18
19 23.9 11.9 9.0 18.2 10.5 2.2 E 0.8 23 2 1007.0 78.5 18.1 0 0 0 0 0 1 19
20 21.7 13.5 11.8 19.0 13.1 0.0 SW 4.0 28 2 1006.8 72.7 17.8 0 0 0 0 0 0 20
21 21.2 12.3 10.5 18.9 6.7 1.6 S 1.4 23 4 1007.0 77.2 16.2 0 0 0 0 0 0 21
22 19.1 13.0 10.0 18.5 2.5 0.7 SE 1.5 21 8 1002.4 85.3 15.9 0 0 0 0 0 0 22
23 21.7 14.0 12.7 18.4 4.5 0.3 W 2.7 28 8 1004.9 83.4 16.8 0 0 0 0 0 0 23
24 15.7 11.5 10.4 18.8 0.2 5.1 S 1.5 18 8 1003.4 89.8 13.5 0 0 0 0 0 0 24
25 17.7 12.0 11.2 18.0 4.1 4.0 S 1.4 28 7 994.8 85.6 14.1 0 0 0 0 0 0 25
26 14.4 9.4 9.0 18.0 2.0 TR NW 3.0 35 6 1005.2 74.1 11.6 0 0 0 0 0 0 26
27 17.5 9.1 6.6 17.3 1.9 1.6 SW 3.3 25 7 1004.1 79.4 12.4 0 0 0 0 0 0 27
28 19.2 8.0 5.1 17.0 8.1 1.7 SW 3.4 28 2 1006.5 71.0 14.1 0 0 0 0 0 0 28
29 21.4 12.7 12.0 17.2 5.0 0.9 SW 4.8 37 6 1004.4 78.1 16.0 0 0 0 0 0 0 29
30 19.3 12.5 10.1 17.7 0.0 11.1 S 2.3 21 8 1007.7 92.7 15.9 0 0 0 0 0 0 30
Total/Mean 20.3 11.8 10.1 17.6 160.4 58.4 X 1.5 X 5.9 1008.8 82.8 15.6 1 0 0 0 0 6 Total/Mean
*Diff./% +0.4 +1.2     89% 116%                           *Diff./%
Date Max. Temp. (°C) 09/09h Min. Temp. (°C) 09/09h Grass Min. Temp. (°C) 21/09h Earth (30cms) Temp. (°C) 09h Sun (Hours) 00/00h R'fall (MM) 09/09h Wind Dir'n 09h Mean Wind Speed (MPH) 00/00h Max. Gust Speed (MPH) 00/00h Cloud Cover (Oktas) 09h Mean MSL Air Pressure (mB) 00/00h Mean Rel. Humd. (%) 00/00h Mean Temp. (°C) 00/00h Fog (vis. <1000m @ 09h) Fog (vis. <200m @ 09h) Snow or Rain and Snow 00/00h Snow Lying @ 09h (>50% cover) Hail 00/00h Thunder 00/00h Date

Differences from average:

Differences from average shown in red. Reference periods used are as follows: Temperature 30 Years 1976/2005; 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  40.7 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

June 2007 Weather Review:

......and click on the link below for a text report of the June 2007 weather in Royston

June 2007 Weather Review

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

Mean daily maximum temperature (30 years 1976/2005) 19.9°C

Mean daily minimum temperature (30 years 1976/2005) 10.6°C

Highest temperature 33.7°C (26th June 1976); lowest temperature 2.2°C (3rd June 1975)

Lowest grass minimum temperature -1.0°C (2nd June 1991)

Warmest June 1976 (Mean temperature 18.3°C); coldest June 1977 (Mean temperature 12.5°C)

Average June rainfall (30 years 1971/2000) 50.2 mm

Wettest June 1985 (Rainfall 135.4 mm); driest June 1996 (Rainfall 8.0 mm)

Wettest Day 19th June 1973 (Rainfall 36.8 mm);

Highest number of "rain days" (0.2 mm or more) 23 (1997); lowest number of "rain days" 3 (1976, 1996)

Highest number of days with thunder 10 (1982)

Highest number of air frosts 0

Highest number of ground frosts 2 (1989)

Highest number of days with snow falling 1 (1975)

Highest number of days with snow lying (ground with more than 50% snow cover @ 0900 GMT) 0

The jagged remains of the 'curtain wall' of Berkhamsted Castle (48 km SW of Royston) are shown in this picture (as seen at 1305 GMT on 2nd June 2007). This castle is typical of the 'motte-and-bailey' type of castle constructed after the Norman Conquest. In the foreground is the Inner Moat and behind the photographer the Outer Moat, whilst beyond the 'curtain wall' is the large grassy area or 'bailey'. Although this day was cloudless at Royston (sunshine 15.8 hours), in the early afternoon a band of broken cloud developed from Hampshire to Yorkshire and this affected Berkhamsted curtailing sunshine at times. It was nonetheless a very pleasant early Summer day with the temperature reaching a maximum of 24.1°C at Royston.

The shower cloud visible in this view from Poors Land (some 3 km SE of Royston) at 0754 GMT on 16th June 2007 set the tone for the rest of the day's weather as  showers occurred at various times during the day, yielding a rainfall total of 3.1 millimetres. The village of Great Chishill is set on the distant ridge whilst the village of Barley nestles beyond the nearer ridge in the right background. Just two days earlier, on 14th, an intense storm cell in the late afternoon caused flash flooding in Barley whereas Royston largely escaped this deluge but did experience heavy showers and frequent thunder at this time. (At time of photograph wind S, mean speed 3 knots gusting to 10 knots, temperature 15.4°C).

 Only two features are visible in this picture, a sky studded with cumulus cloud and a large acreage of growing oats! This was the scene not far from Heath Farm SE of Royston on 26th June 2007 at 0831 GMT and is typical of the 'prairie' type landscape skirting the northern edge of the East Anglian Heights notably between Baldock and Royston and continuing a little further to the east. Barley, wheat, oats and oilseed rape are currently the main crops cultivated on these large open stretches of country. Just half an hour later at 0900 GMT the cloud had increased to 6 oktas and not much sunshine occurred thereafter (daily total 2.0 hours). It was a very cool day, the maximum temperature being only 14.4°C (5.5°C below average).

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(This page last updated 17th July 2007 2014 GMT)