Royston (Iceni) Weather Station

2007 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

9.8

13.8

18

2.5

23

4.9

11.7

9

-3.1

25

2.7

-7.7

25

6.9

6.8

7.0

4

6

44.0

62.9

21

12.0

9

52.4

78.2

7.8

31

5

JAN

FEB

9.1

12.4

23

1.4

8

3.8

7.7

28

-4.9

7

1.4

-10.4

7

5.8

5.7

6.0

7

10

64.5

61.8

17

10.9

10

83.6

80.4

8.0

3

7

FEB

MAR

12.2

17.5

12

5.9

22

3.9

8.8

6

-1.5

21

1.0

-5.6

22

7.1

7.9

8.2

2

13

9.7

36.2

15

10.7

2

42.4

177.1

10.2

13

3

MAR

APR

18.1

23.0

15

8.8

3

6.4

13.3

25

0.2

4

3.5

-3.3

4

11.5

11.9

12.5

0

4

0.0

1.6

3

0.6

23, 25

3.8

232.1

13.9

30

0

APR

MAY

17.1

24.3

24

8.5

28

8.6

15.6

24

4.0

2

6.7

0.8

1

12.3

14.5

14.9

0

0

0.0

147.5

17

65.7

27

122.6

143.8

14.0

2

3

MAY

JUN

20.3

25.0

9

14.2

6

11.8

15.4

15

7.0

1

10.1

3.5

1

15.6

17.6

18.2

0

0

0.0

58.4

18

11.4

14

40.7

160.4

15.8

2

4

JUN

JUL

21.3

24.5

19

17.5

11

12.5

17.1

16

8.8

31

10.5

5.6

8, 31

16.4

18.3

18.8

0

0

0.0

59.8

15

16.3

20

35.9

186.4

13.3

31

0

JUL

AUG

21.3

29.8

5

14.6

22

12.1

16.0

15

8.5

10

9.8

5.0

10

16.4

18.1

18.5

0

0

0.0

73.0

13

17.8

19

53.6

190.8

14.0

5

4

AUG

SEP

19.4

24.0

5

11.8

26

10.7

14.4

7

5.0

30

8.2

1.4

30

14.5

16.5

16.8

0

0

0.0

27.8

11

9.2

23

24.5

169.6

11.8

11

1

SEP

OCT

14.9

18.9

4

10.0

25

8.1

13.6

13

1.2

24

5.6

-2.5

24

10.8

12.5

12.7

0

6

0.0

46.8

7

23.8

16

34.0

113.5

10.1

4

6

OCT

NOV

10.4

16.5

1

5.5

23

4.8

10.9

2

-1.0

24

2.2

-5.1

15, 24

7.0

8.3

8.4

3

9

9.3

44.4

9

15.9

21

45.6

93.9

8.0

6

4

NOV

DEC

7.8

14.1

6

2.0

19, 20

3.1

12.0

5

-6.1

20

0.7

-9.8

20

5.1

6.0

6.1

7

12

54.8

41.9

12

7.7

24

41.4

74.8

6.7

23

6

DEC

YEAR

15.1

X

X

X

X

7.6

X

X

X

X

5.2

X

X

10.8

12.0

12.3

23

60

182.3

662.1

158

X

X

580.5

1701.0

X

X

43

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

1013

1032

27

981

18

1

1

0

0

3

17

7

1

1

6.7

67

18

88.2

5.5

0

0

3

1

0

0

JAN

FEB

1005

1039

3

976

12

0

1

1

2

8

3

7

2

4

2.9

53

28

91.3

5.4

1

0

1

2

0

1

FEB

MAR

1014

1035

14

985

1

4

4

0

1

2

7

8

5

0

3.5

51

5

83.2

3.9

3

2

4

0

3

0

MAR

APR

1021

1030

2

1008

25

12

5

0

1

1

4

5

2

0

1.6

30

3

77.2

4.8

1

0

0

0

0

0

APR

MAY

1008

1022

23

991

11

6

5

2

0

3

6

5

3

1

2.4

46

10

83.4

5.5

0

0

0

0

0

1

MAY

JUN

1009

1024

5

994

25

5

6

1

3

4

6

4

1

0

1.5

37

29

82.8

5.9

1

0

0

0

0

6

JUN

JUL

1008

1020

31

993

23

0

1

2

0

3

10

9

5

1

3.2

41

26

77.1

5.6

0

0

0

0

0

4

JUL

AUG

1013

1027

26

990

14

8

1

0

0

3

7

4

8

0

2.1

37

15

78.7

5.0

2

0

0

0

0

1

AUG

SEP

1018

1030

7

998

24

7

1

0

0

1

8

5

7

1

2.4

46

24

81.7

5.2

0

0

0

0

1

1

SEP

OCT

1021

1035

20

1007

16

2

4

0

2

8

2

4

2

7

2.5

44

28

90.4

5.2

1

0

0

0

0

0

OCT

NOV

1017

1032

2

991

19

0

0

2

3

6

8

9

2

0

5.3

39

10

88.9

4.8

0

0

1

0

0

0

NOV

DEC

1017

1039

14

974

9

0

3

1

3

9

8

5

1

1

6.6

55

1

91.1

5.8

1

1

0

0

0

0

DEC

YEAR

1013.7

X

X

X

X

45

32

9

15

51

86

72

39

16

3.4

X

X

84.5

5.2

10

3

9

3

4

14

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 15th January 2008 2027 GMT)