Royston (Iceni) Weather Station

Daily Weather Observations - February 2005

(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 8.2 5.2 3.9 5.9 0.2 0.1 N 1.6 18 4 1034.4 95.5 6.7 0 0 0 0 0 0 1
2 8.0 4.5 4.0 6.2 0.0 0.3 NW 0.9 16 8 1035.6 85.4 5.6 0 0 0 0 0 0 2
3 9.9 3.4 -0.1 6.2 0.0 0.0 W 0.7 12 8 1035.5 95.3 7.2 0 0 0 0 0 0 3
4 8.5 6.4 5.1 6.6 0.0 0.0 S 0.7 14 8 1028.9 87.5 6.9 0 0 0 0 0 0 4
5 6.5 2.6 -0.6 6.5 0.8 0.6 SE 0.9 16 6 1017.0 90.1 4.7 0 0 0 0 0 0 5
6 8.2 3.0 1.1 6.2 1.6 0.1 SE 0.4 14 8 1020.8 94.5 4.8 0 0 0 0 0 0 6
7 9.3 1.1 -3.1 6.0 8.2 0.1 SE 0.7 14 0 1023.1 90.9 3.9 0 0 0 0 0 0 7
8 9.3 2.0 -1.1 5.2 5.3 0.0 SE 2.6 21 8 1024.3 94.5 4.7 0 0 0 0 0 0 8
9 10.5 4.6 3.1 5.3 1.4 0.1 SW 7.3 30 8 1024.0 89.2 7.5 0 0 0 0 0 0 9
10 11.1 8.0 7.7 6.0 0.0 8.9 SW 7.8 41 8 1019.6 92.7 8.6 0 0 0 0 0 0 10
11 12.0 4.5 2.6 6.6 1.3 3.5 CALM 2.2 25 8 1017.1 96.1 6.8 0 0 0 0 0 0 11
12 12.2 10.6 9.0 7.2 2.4 TR W 14.3 48 6 1003.5 81.9 8.8 0 0 0 0 0 0 12
13 5.8 2.2 -0.1 7.0 2.9 0.3 NW 10.6 48 1 1006.8 77.4 3.9 0 0 0 0 1 0 13
14 6.8 1.0 -1.0 6.2 4.0 0.2 NW 8.7 39 7 1017.1 70.2 3.2 0 0 0 0 0 0 14
15 6.4 -0.4 -3.2 5.6 5.6 0.0 N 2.3 32 6 1023.1 85.2 1.8 0 0 0 0 1 0 15
16 3.9 0.1 -2.1 5.1 0.0 0.0 N 0.1 9 8 1028.3 79.0 1.6 0 0 0 0 0 0 16
17 6.0 0.6 -2.0 4.9 0.0 0.6 W 0.2 12 8 1025.6 89.8 3.9 0 0 0 0 0 0 17
18 8.5 3.1 2.7 5.4 1.6 0.3 SW 2.8 23 8 1019.2 91.7 5.0 0 0 0 0 0 0 18
19 5.5 0.5 -2.5 5.5 5.2 TR NW 4.6 28 0 1016.9 72.9 2.0 0 0 1 0 0 0 19
20 3.5 -1.6 -4.1 4.8 1.0 1.8 NW 4.1 28 7 1015.3 88.2 0.4 0 0 1 0 0 0 20
21 5.0 0.0 -0.1 4.5 2.2 1.8 N 1.3 25 8 1011.3 94.4 1.0 0 0 1 1 1 0 21
22 3.3 -1.5 -5.4 4.5 4.4 0.9 NE 1.9 25 2 1015.6 91.5 0.3 0 0 1 1 1 0 22
23 2.5 -2.7 -7.0 4.1 0.6 1.2 N 1.5 18 5 1015.0 94.7 0.0 0 0 1 1 0 0 23
24 2.5 0.0 -0.2 4.1 0.0 2.6 N 1.5 23 8 1013.0 98.6 0.4 0 0 1 0 0 0 24
25 4.0 -1.1 -3.0 4.0 1.3 1.4 N 0.6 18 8 1019.2 90.0 0.6 0 0 0 1 0 0 25
26 5.0 -0.3 -1.8 4.2 0.0 0.8 N 1.3 30 8 1019.6 95.9 1.7 0 0 1 0 0 0 26
27 4.0 -1.8 -4.2 4.3 6.9 TR NE 1.3 25 1 1027.1 82.7 -0.7 0 0 1 1 0 0 27
28 3.2 -4.5 -9.3 3.8 5.9 1.5 W 2.4 21 1 1022.8 85.4 -0.7 0 0 1 0 0 0 28
Total/Mean 6.8 1.8 -0.4 5.4 62.6 27.1 X 3.0 X 5.9 1020.7 88.6 3.6 0 0 9 5 4 0 Total/Mean
*Diff./% -0.4 0.0     86% 77%                           *Diff./%

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  63.2 hours

Air Frost Duration  62.2 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

February 2005 Weather Review:

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

February 2005 Weather Review

February (since 1973) at Royston (Iceni) Weather Station:

Mean day maximum temperature (30 years 1973/2002) 7.2°C

Mean night minimum temperature (30 years 1973/2002) 1.8°C

Highest temperature 18.5°C (13th February 1998); lowest temperature -10.5°C (12th & 13th February 1985)

Lowest grass minimum temperature -14.5°C (10th February 1986)

Warmest February 1990 (Mean temperature 8.1°C); coldest February 1986 (Mean temperature -1.6°C)

Average February rainfall (30 years 1971/2000) 35.0 mm

Wettest February 2001 (Rainfall 90.7 mm); driest February 1998 (Rainfall 4.8 mm)

Wettest Day 7th February 2001 (Rainfall 21.8 mm);

Highest number of "rain days" (0.2 mm or more) 21 (2000); lowest number of "rain days" 5 (1998)

Highest number of days with thunder 2 (1995)

Highest number of air frosts 24 (1986)

Highest number of ground frosts 25 (1986)

Highest number of days with snow falling 15 (1986)

Highest number of days with snow lying (ground with more than 50% snow cover @ 0900 GMT) 23 (1986)

The growing popularity of Winter gardens is greatly enhanced by this stunning display in the University Botanic Garden, Cambridge (21 km NE of Royston), as seen at 1154 GMT on 7th February 2005. There is actually much more colour on display than can be seen in just one photograph and the garden can be viewed from both sides as well as on the main path through the middle as shown. After a very dull start to February, with only 2.6 hours sunshine in the first 6 days, the 7th dawned clear and a day of continuous sunshine followed. A maximum temperature of 9.3°C (1.8°C above the 30 Year mean for this day) was achieved at Royston after an overnight minimum of 1.1°C. Sunshine for the day was 8.2 hours, with another 5.3 hours the next day. A brief period of early morning sunshine has served to accentuate the contrast between this Autumn sown cereal crop at Lowerfield to the east of Royston, and a somewhat threatening sky on 12th February 2005 at 0935 GMT. The cloud predominated and the sunny intervals that day totalled only 2.4 hours sunshine by the end of the day. It is fairly  windy with a W wind of mean speed of 11 knots gusting to 28 knots sweeping across this very open area. The temperature is a very mild 12.0°C (only 0.2°C below the maximum for the day), however, after a very high night minimum temperature of 10.6°C (which is no less than 7.7°C above the 30 Year mean for this day!). The ancient Icknield Way runs along the far edge of this field at the right of the picture. After a virtually snow free Winter 2004/2005 in Royston, colder conditions set in during the last week of February and a light cover of snow occurred on 22nd February as seen in this picture taken at Hyde Hill on the eastern perimeter of the town at 0928 GMT. With sunshine of 4.4 hours and a maximum temperature of 3.3°C for the day the snow did not last and soon thawed over most of the district. A NE wind of mean speed 4 knots gusting to 12 knots in a temperature of 0.3°C made for a significant wind chill factor in this elevated position. Later in the day, at 1615 GMT, a brief but spectacular very heavy small grain hail shower swept in from the north-east. The beech trees shown in the picture are growing out of virtually solid chalk (as are many such trees in Royston)!

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(This page last updated 9th March 2005 2102 GMT)