Royston (Iceni) Weather Station

2005 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

8.6

13.9

7

2.9

24

3.8

11.8

10

-2.6

26

1.7

-7.0

26

5.7

5.5

5.6

3

9

29.6

31.5

16

5.5

20

51.1

87.0

6.9

23

4

JAN

FEB

6.8

12.2

12

2.5

23, 24

1.8

10.6

12

-4.5

28

-0.4

-9.3

28

3.6

5.4

5.6

8

19

62.2

27.1

16

8.9

10

63.2

62.6

8.2

7

8

FEB

MAR

10.8

18.0

18

3.3

2

4.2

11.2

17

-3.6

4

1.8

-8.5

4

6.7

6.8

7.2

7

10

49.3

35.9

16

11.2

26

34.1

84.8

10.7

17

4

MAR

APR

14.5

21.1

30

7.7

8

5.4

12.5

30

-2.1

9

3.1

-5.0

9

9.3

10.6

11.1

1

5

9.7

39.8

13

9.7

14

32.9

143.5

12.8

29

1

APR

MAY

17.3

30.3

27

11.1

4

7.6

14.5

27

1.0

12

5.3

-1.6

12

11.8

13.9

14.6

0

7

0.0

35.3

15

15.8

21

31.2

212.0

14.5

15

0

MAY

JUN

22.0

31.7

19

15.7

11

11.5

18.9

20

3.6

7

9.3

-0.1

7

16.3

17.5

18.2

0

1

0.0

41.2

9

11.9

28

17.7

211.8

16.2

27

1

JUN

JUL

22.1

29.6

14

15.8

25

13.2

17.4

15

10.4

5

11.6

8.1

16

17.1

18.8

19.4

0

0

0.0

33.8

13

7.6

24

43.9

179.7

15.2

17

2

JUL

AUG

22.5

31.4

31

15.8

19

12.1

15.4

31

8.5

   7  8

9.9

5.9

8

16.7

18.0

18.6

0

0

0.0

62.6

13

16.5

22

57.3

199.3

13.4

17

1

AUG

SEP

20.9

27.4

4

15.3

16

12.0

16.6

5

4.0

17

10.0

1.9

17

15.7

17.3

17.7

0

0

0.0

59.5

14

23.3

4

50.6

174.1

11.7

2

2

SEP

OCT

17.2

22.5

10

13.5

18

10.7

15.9

12

6.2

4

8.7

2.3

18

13.1

13.8

13.9

0

0

0.0

63.4

14

18.3

23

61.2

125.1

9.9

4

4

OCT

NOV

9.3

17.5

2

3.0

25

3.9

12.9

11

-2.3

18

1.9

-5.5

18

5.8

8.4

8.4

8

11

72.0

46.5

13

18.6

2

39.3

108.5

7.7

7

5

NOV

DEC

7.1

10.5

15, 16

0.5

28

2.6

7.9

16

-4.2

28

0.5

-9.5

28

4.4

5.1

5.2

7

16

94.8

22.6

12

9.5

30

34.1

95.9

6.6

17

4

DEC

YEAR

14.9

X

X

X

X

7.4

X

X

X

X

5.3

X

X

10.5

11.8

12.1

34

78

317.6

499.2

164

X

X

516.6

1684.3

X

X

36

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

1021

1035

26

993

18

5

0

0

0

5

13

5

1

2

6.4

62

8

87.1

4.9

0

0

1

0

1

0

JAN

FEB

1021

1036

3

998

12

8

2

0

4

1

3

4

5

1

3.0

48

12, 13

88.6

5.9

0

0

9

5

4

0

FEB

MAR

1015

1034

9

998

2

3

2

3

1

4

5

8

3

2

3.0

41

16

84.9

6.6

3

1

4

1

1

0

MAR

APR

1012

1031

11

990

18

3

0

2

1

4

11

3

4

2

2.5

44

6

78.7

5.6

1

0

1

0

2

3

APR

MAY

1015

1028

11

1001

22

3

5

1

1

6

6

5

4

0

3.1

41

7

74.8

5.7

0

0

0

0

2

3

MAY

JUN

1017

1037

8

1003

3

4

5

0

1

7

7

4

2

0

2.4

35

4

73.5

5.5

0

0

0

0

0

4

JUN

JUL

1014

1032

12

999

25

4

3

1

1

1

7

8

5

1

2.1

37

6

77.1

5.7

1

0

0

0

0

0

JUL

AUG

1016

1025

15

1001

25

4

1

0

3

3

4

9

7

0

1.7

37

24

75.4

3.9

0

0

0

0

0

3

AUG

SEP

1016

1029

3

1006

25

3

4

1

0

5

10

4

1

2

1.8

37

28

82.3

4.9

1

1

0

0

0

4

SEP

OCT

1014

1032

3

990

21

0

3

1

6

7

7

0

2

5

2.0

44

24

89.9

5.1

3

0

0

0

0

1

OCT

NOV

1015

1040

22

986

25

1

0

0

0

7

7

8

3

4

2.8

44

3

91.2

4.5

2

0

0

0

0

0

NOV

DEC

1017

1041

12

976

2

4

1

0

1

7

6

6

3

3

2.4

48

30

91.5

5.1

0

0

2

4

0

0

DEC

YEAR

1016.1

X

X

X

X

42

26

9

19

57

86

64

40

22

2.8

X

X

82.9

5.3

11

2

17

10

10

18

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 10th January 2006 2133 GMT)