Royston (Iceni) Weather Station

2003 Annual Summary 

Part1 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 0900 GMT

Mean Earth 30cms 2100 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

6.6

13.4

27

0.1

7

2.3

8.4

27

-5.7

8

-0.4

-8.8

8

3.7

4.7

4.7

11

12

186.3

98.0

20

23.0

1

90.5

67.5

6.9

11

7

JAN

FEB

7.6

13.5

27

2.6

13

1.2

7.0

8

-6.1

18

-1.2

-10.0

18

3.5

3.5

3.7

11

16

128.8

16.6

10

3.8

8

38.2

120.8

9.4

21

5

FEB

MAR

13.1

18.0

23

7.0

13

3.3

9.8

5

-2.4

22

0.5

-5.5

19

7.2

7.0

7.5

7

14

29.3

19.2

3

11.6

5

14.7

197.9

12.4

31

1

MAR

APR

15.4

25.5

16

7.5

10

4.8

10.2

15

-3.4

8

2.4

-6.3

8

9.3

10.0

10.6

4

8

28.3

24.0

9

6.4

30

28.7

193.0

13.5

16

0

APR

MAY

17.9

26.0

30 31

13.0

16

8.4

14.9

31

3.4

15

6.8

0.3

15

12.5

13.8

14.5

0

0

0.0

36.7

16

6.4

1

43.0

202.6

15.1

30

2

MAY

JUN

22.6

27.5

16

17.6

6

12.4

16.6

23

8.6

15

10.7

5.9

21

17.0

18.2

18.9

0

0

0.0

46.2

14

17.0

22

30.8

220.7

15.5

15

0

JUN

JUL

23.6

31.0

15

17.3

3

13.7

17.1

17

10.4

5

12.2

8.5

12

18.1

19.2

20.0

0

0

0.0

47.7

13

10.8

26

40.1

203.0

16.0

13

3

JUL

AUG

25.7

36.4

10

19.2

28

13.9

19.8

10

6.9

30

11.6

4.3

31

19.2

20.2

21.0

0

0

0.0

0.7

1

0.7

1

1.5

239.2

14.3

2

1

AUG

SEP

21.3

27.2

16

14.5

23

10.3

15.2

22

4.9

24

7.6

1.5

24

15.0

16.2

16.8

0

0

0.0

17.1

7

5.9

6

15.7

216.8

12.3

4

0

SEP

OCT

13.9

19.3

1

8.7

22

5.0

13.0

10

0.2

24

2.4

-3.1

24

8.3

10.4

10.7

0

13

0.0

34.1

15

13.5

30

48.8

167.2

9.8

11

1

OCT

NOV

11.3

15.3

6

7.0

23

6.6

11.6

18

1.0

27

5.4

-2.0

27

8.3

8.6

8.7

0

2

0.0

103.8

16

20.6

22

102.1

92.2

7.9

7

6

NOV

DEC

7.7

14.0

12

2.9

29 30

3.3

12.1

13

-4.1

8

1.5

-6.9

8

4.7

5.8

5.8

5

11

50.7

57.2

18

8.3

20

80.1

76.6

6.8

7

13

DEC

YEAR

15.6

X

X

X

X

7.1

X

X

X

X

5.0

X

X

10.6

11.5

11.9

38

76

423.4

501.3

142

X

X

534.2

1997.5

X

X

39

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 0900 GMT (oktas)

Fog (visibility < 1000m @ 0900 GMT)

Fog (visibility < 200m @ 0900 GMT)

Snow or Rain and Snow

Snow Lying (> 50% cover @ 0900 GMT)

Hail

Thiunder

Month

JAN

1016

1039

11

976

2

2

4

1

1

4

8

6

3

2

5.7

48

30

90.7

5.6

0

0

6

3

2

0

JAN

FEB

1020

1041

17

991

3

1

2

4

6

6

4

2

1

2

3.3

39

   3    28

86.2

4.8

3

3

2

2

1

0

FEB

MAR

1023

1043

16

1007

2

3

7

2

0

4

6

3

2

4

3.7

41

8

78.2

3.7

3

1

0

0

0

0

MAR

APR

1018

1036

5

992

28

2

7

5

3

2

6

0

5

0

3.4

39

28

72.2

4.6

0

0

2

0

2

1

APR

MAY

1016

1028

7

997

2

1

2

0

2

5

12

7

2

0

4.7

44

12

74.5

4.6

0

0

0

0

1

1

MAY

JUN

1015

1025

13

999

30

1

1

3

5

3

9

6

2

0

3.3

44

19

71.6

5.1

0

0

0

0

0

3

JUN

JUL

1015

1025

12

997

1

2

2

1

1

3

9

10

3

0

3.6

32

25

73.1

5.0

0

0

0

0

0

3

JUL

AUG

1019

1025

5

1005

29

3

8

1

3

2

2

7

5

0

2.1

30

21

67.5

3.6

0

0

0

0

0

1

AUG

SEP

1020

1034

24

1000

22

1

1

0

5

4

8

5

4

2

2.2

39

22

71.0

3.2

0

0

0

0

0

1

SEP

OCT

1014

1033

16

971

31

0

13

0

0

1

4

10

2

1

2.8

39

8

81.5

4.0

1

0

0

0

2

0

OCT

NOV

1012

1031

7

983

26

1

2

0

4

10

9

1

2

1

4.5

46

14

91.7

5.2

1

0

0

0

0

0

NOV

DEC

1017

1035

   6  7

988

28

0

5

1

5

3

7

2

4

4

3.7

46

  20    21

90.9

4.9

2

2

2

0

0

0

DEC

YEAR

1017.1

X

X

X

X

17

54

18

35

47

84

59

35

16

3.6

X

X

79.1

4.5

10

6

12

5

8

10

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 20th January 2004 2056 GMT)