Royston (Iceni) Weather Station

2006 Annual Summary 

Part 1 Temperature, Rainfall & Sunshine

 

 

 

 

 

           T e m p e r a t u r e (C)

 

 

 

 

 

 

 

 

 

   Rainfall (mm)

 

 

  Sunshine (Hours)

 

 

 

Month

Mean Maximum

Highest Maximum

Date(s)

Lowest Maximum

Date(s)

Mean Minimum

Highest Minimum

Date(s)

Lowest Minimum

Date(s)

Mean Grass Minimum

Lowest Grass Minimum

Date(s)

Mean Dry Bulb (5 min. obs.)

Mean Earth 30cms 09 GMT

Mean Earth 30cms 21 GMT

No. of Air Frosts

No. of Ground Frosts

Air Frost Duration (Hours)

Total

No. of Days with 0.2mm or more

Most in a Day

Date(s)

Rainfall Duration (Hours)

Total

Highest

Date(s)

No. of Days no sun

Month

 

JAN

6.2

11.0

19

0.7

24

2.1

8.2

19

-4.3

24, 25

0.2

-7.8

25

3.8

4.7

4.8

9

10

91.8

16.8

13

3.8

3

35.1

61.9

7.6

28

10

JAN

 

FEB

6.5

11.4

15

-1.5

2

1.6

7.9

13

-3.0

3

-0.1

-5.8

10

3.5

4.3

4.5

11

15

76.5

31.9

11

6.6

14

35.4

75.2

9.2

25

11

FEB

 

MAR

8.9

16.5

30

3.1

16

1.9

11.2

27

-4.3

3

-0.1

-8.5

3

4.7

5.1

5.5

13

18

112.8

33.2

12

6.5

7

30.3

112.4

10.2

23

5

MAR

 

APR

13.8

17.5

27

8.7

11

5.2

9.5

27

-3.0

5

3.0

-6.9

5

8.8

10.1

10.7

2

5

14.2

32.8

14

12.9

30

43.6

141.1

12.6

5

1

APR

 

MAY

17.6

26.0

4

13.2

29

9.0

13.0

27

3.2

30

7.3

1.7

30

12.7

14.5

15.0

0

0

0.0

70.2

19

9.2

6

67.1

158.3

14.0

11

0

MAY

 

JUN

22.8

29.8

12

15.4

26

12.1

18.5

12

5.1

1

10.4

2.4

1

17.2

18.3

19.2

0

0

0.0

24.3

8

18.6

13

15.4

258.5

16.0

9

0

JUN

 

JUL

27.8

35.2

19

21.0

7

15.1

20.7

20

8.4

15

13.0

5.5

15

21.1

20.8

21.8

0

0

0.0

93.4

10

75.5

26

13.5

297.2

16.1

3

0

JUL

 

AUG

21.0

27.3

6

15.9

12

12.8

17.3

7

9.1

25

11.2

6.5

25

16.3

18.5

19.0

0

0

0.0

91.4

17

15.6

18

48.0

147.4

11.8

5

1

AUG

 

SEP

22.3

28.6

11

17.2

22

13.8

18.3

5

7.2

8

11.8

4.6

8

17.6

17.9

18.4

0

0

0.0

44.6

14

10.9

13

31.7

191.7

12.2

8

1

SEP

 

OCT

17.2

20.5

9

14.0

 23 27

10.9

14.9

10

7.0

14

8.9

4.5

14

13.4

14.4

14.6

0

0

0.0

62.9

16

10.3

23

31.3

131.7

10.0

7

2

OCT

 

NOV

11.9

15.3

15

8.4

21

6.0

12.0

25

-0.1

2

3.6

-3.5

2

8.2

9.1

9.1

1

5

0.2

65.9

15

15.3

17

41.6

118.7

8.6

2

1

NOV

 

DEC

9.0

14.3

4

1.2

22

4.9

13.0

5

-4.0

19

3.4

-7.1

19

6.5

7.2

7.4

5

8

63.6

70.7

18

17.9

30

31.0

67.4

6.5

17

12

DEC

 

YEAR

15.4

X

X

X

X

8.0

X

X

X

X

6.1

X

X

11.2

12.1

12.5

41

61

359.1

638.1

167

X

X

424.0

1761.5

X

X

44

YEAR

 

Part 2  Air Pressure, Wind Direction, Wind Speed, Humidity, Cloud Cover, Fog, Snow Falling, Snow Lying, Hail & Thunder

 

       P r e s s u r e (mb)

 

Wind Direction 0900 GMT (No. of Days)

 

 

Wind Speed (MPH)

Humidity

Cloud

       No of Days With:

 

 

 

Month

Mean MSL Pressure

Highest

Date(s)

Lowest

Date(s)

N

NE

E

SE

S

SW

W

NW

CALM

Mean Wind Speed

Maximum Gust

Date

Mean Relative Humidity (5 min.obs.)

Mean Cloud Cover 09 GMT (oktas)

Fog (visibility < 1000m @ 09 GMT

Fog (visibility < 200m @ 09 GMT

Snow or Rain and Snow

Snow Lying (> 50% cover @ 09 GMT)

Hail

Thunder

Month

JAN

1023

1039

22

991

1

2

5

2

4

6

2

3

2

5

1.8

46

11

92.3

6.5

0

0

3

0

0

0

JAN

FEB

1015

1034

5

978

17

1

6

1

0

3

4

5

5

3

2.9

48

15

87.0

5.8

0

0

5

1

0

0

FEB

MAR

1009

1031

12

989

24

0

9

0

4

3

8

4

2

1

3.7

46

28

81.4

5.6

1

1

6

1

2

0

MAR

APR

1013

1026

28

1001

1

5

2

2

1

2

7

8

3

0

3.0

46

2

78.2

5.4

0

0

0

0

1

0

APR

MAY

1011

1027

31

984

22

2

2

0

3

4

9

6

4

1

2.7

44

19

81.5

6.0

1

0

0

0

1

2

MAY

JUN

1019

1030

2

1006

21

2

6

0

7

2

4

6

3

0

1.4

35

21

70.5

3.4

0

0

0

0

0

1

JUN

JUL

1017

1032

14

1003

31

4

7

3

2

2

8

3

2

0

1.9

37

9

67.2

3.2

0

0

0

0

1

4

JUL

AUG

1010

1023

8

998

17

5

1

0

0

3

3

11

8

0

2.5

37

1

79.8

5.2

0

0

0

0

1

5

AUG

SEP

1010

1031

8

998

21

3

1

0

6

6

8

4

0

2

2.5

46

3

83.6

4.4

1

0

0

0

0

1

SEP

OCT

1007

1031

13

981

24

0

1

1

5

7

8

5

2

2

3.1

44

26

90.2

4.9

3

1

0

0

1

2

OCT

NOV

1011

1035

10

976

23

0

0

0

1

10

9

9

1

0

3.7

44

20

89.8

4.0

0

0

0

0

0

1

NOV

DEC

1016

1044

22

981

8

1

1

1

0

9

12

3

0

4

5.3

65

30

91.7

5.7

3

2

0

0

0

0

DEC

YEAR

1013.4

X

X

X

X

25

41

10

33

57

82

67

32

18

2.9

X

X

82.8

5.0

9

4

14

2

7

16

YEAR

Click on the links below to access the graphs and charts representing the data in the above tables.........

1. Monthly Mean Maximum & Minimum Temperatures   2. Monthly Temperature Extremes

3. Monthly Mean Earth (30 cms Depth) Temperature   4. Monthly Frequency of Air & Ground Frost, and Air Frost Duration

5. Monthly Rainfall   6. Monthly Rainfall Duration  7. Monthly Sunshine Duration

8. Monthly Rainfall & Mean MSL Air Pressure   9. Monthly Mean, Highest and Lowest MSL Air Pressure

10. Monthly Wind Direction Frequency @ 0900 GMT 

11. Monthly Maximum Gust & Mean Wind Speed   12. Monthly Mean Relative Humidity

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(This page last updated 13th January 2007 2104 GMT)