Royston (Iceni) Weather Station

2010 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

3.5

8.4

18

0.0

4, 7, 8

-0.3

5.3

19

-7.2

9

-2.4

-13.3

9

1.4

3.3

3.3

17

22

252.4

38.7

17

9.2

14

45.7

64.8

7.2

30

13

JAN

FEB

5.7

10.1

27

1.2

8

0.8

5.4

25

-1.9

1

-1.1

-6.0

18

2.8

3.6

3.8

12

17

87.2

67.8

24

8.2

18

X

44.8

7.7

1

11

FEB

MAR

11.0

17.3

24

5.0

10

3.1

11.0

20

-6.3

8

0.6

-10.6

7

6.4

6.1

6.5

6

14

58.8

24.9

14

4.8

30

X

104.5

10.5

7

3

MAR

APR

15.6

21.5

28

10.0

1, 2

4.6

11.4

29

0.5

22

1.6

-3.6

22

9.6

10.1

10.7

0

12

0.0

17.3

9

4.0

25

X

172.7

12.8

23

1

APR

MAY

17.3

28.1

23

9.2

8

6.7

15.5

24

-0.5

12

4.1

-4.1

12

11.5

13.4

14.1

1

7

2.4

37.1

9

19.4

1

X

175.2

15.7

23

0

MAY

JUN

22.1

29.5

27

14.1

1

10.8

16.3

29

4.6

17

8.3

1.6

17

16.1

17.2

18.0

0

0

0.0

42.3

10

22.3

6

X

216.8

16.0

3

1

JUN

JUL

24.4

31.3

9

19.5

13

14.4

18.0

2

10.0

6

12.8

6.6

6

18.9

19.7

20.5

0

0

0.0

20.4

11

6.8

27

X

168.2

14.1

10

1

JUL

AUG

20.8

25.0

9

17.1

4

12.3

18.5

21

7.2

31

10.8

3.9

31

15.9

17.7

18.3

0

0

0.0

149.3

20

51.8

25

X

120.6

11.8

31

1

AUG

SEP

18.8

23.6

22

12.9

24

10.7

15.5

11

4.7

25

8.9

2.7

25

14.2

15.4

15.8

0

0

0.0

53.8

17

12.6

29

X

130.4

12.4

1

1

SEP

OCT

14.4

20.7

10

8.9

25

8.1

14.0

9

-0.1

25

6.2

-3.4

25

10.5

11.9

12.1

1

5

1.8

63.9

16

13.4

2

X

112.4

9.1

25

6

OCT

NOV

7.8

17.2

4

-1.0

28

3.4

14.8

5

-7.1

28

0.8

-10.5

28

5.3

7.7

7.8

7

15

108.8

34.1

19

14.1

5

X

66.1

7.4

16

6

NOV

DEC

2.4

8.0

11

-2.7

19

-2.1

4.8

11

-11.0

20

-4.6

-14.5

19

0.1

3.1

3.2

22

24

386.5

24.5

11

8.4

18

X

37.5

6.1

9

11

DEC

YEAR

13.7

X

X

X

X

6.0

X

X

X

X

3.8

X

X

9.4

10.8

11.2

66

116

897.9

574.1

177

X

X

45.7

1414.0

X

X

55

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 Air 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

1014.7

1042.2

26

989.6

29

1

7

4

4

1

4

6

4

0

4.9

31

16

88.2

6.0

0

0

13

10

0

0

JAN

FEB

1002.6

1024.6

12

977.0

25

7

5

1

3

4

4

4

0

0

5.6

38

26

87.7

7.2

1

0

12

5

0

0

FEB

MAR

1015.8

1035.0

7

980.5

31

1

6

1

2

6

6

5

4

0

6.8

34

31

77.8

5.2

1

0

0

0

0

0

MAR

APR

1018.9

1034.5

10

998.5

2

4

6

1

2

6

3

5

3

0

5.7

32

2

69.7

4.0

0

0

0

0

1

0

APR

MAY

1016.9

1031.9

20

1004.3

29

5

11

1

1

0

3

6

4

0

4.6

35

30

70.4

4.9

0

0

0

0

1

0

MAY

JUN

1017.0

1028.9

 15 16

999.6

8

4

5

2

3

3

2

5

6

0

4.2

25

10

70.8

4.5

0

0

0

0

0

1

JUN

JUL

1014.3

1026.0

6

998.3

15

1

2

0

1

4

13

6

4

0

6.3

37

15 16

66.5

5.4

0

0

0

0

0

1

JUL

AUG

1013.1

1026.9

31

992.9

23

3

1

1

0

2

9

10

5

0

6.1

38

29

78.0

5.8

0

0

0

0

0

1

AUG

SEP

1014.0

1026.0

13

999.0

7

2

2

0

3

6

6

6

5

0

5.9

36

15

79.3

5.2

1

0

0

0

0

0

SEP

OCT

1012.3

1029.0

25

991.9

3

3

5

1

2

6

7

3

4

0

5.8

34

3

84.3

5.7

3

0

0

0

0

0

OCT

NOV

1005.0

1021.8

16

966.4

8

1

4

0

4

2

5

7

7

0

6.2

46

11

87.4

5.6

2

0

4

2

0

0

NOV

DEC

1014.0

1037.1

 14 15

990.0

18

7

2

1

2

3

2

7

5

2

4.5

29

4

89.1

6.9

7

2

10

16

0

0

DEC

YEAR

1013.2

X

X

X

X

39

56

13

27

43

64

70

51

2

5.6

X

X

79.1

5.5

15

2

39

33

2

3

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 2011 2105 GMT)