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  Home - Climate - 30 Year Averages - Casement Aerodrome

 

30 Year Averages


Please choose a 30 year average report from any station by clicking on the map or one of the links below:

CASEMENT AERODROME

monthly and annual mean and extreme values

1968-1996

TEMPERATURE (degrees Celsius)

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

year

mean daily max.

7.8

7.6

9.6

11.8

14.6

17.7

19.7

19.3

16.8

13.6

9.9

8.3

13.1

mean daily min.

2.0

1.7

2.5

3.2

5.7

8.6

10.7

10.3

8.5

6.7

3.6

2.8

5.5

mean

4.9

4.6

6.0

7.5

10.1

13.1

15.2

14.8

12.6

10.1

6.7

5.6

9.3

absolute max.

15.4

14.7

18.8

21.3

24.7

27.5

29.8

30.5

24.7

21.3

17.7

15.4

30.5

absolute min.

-12.4

-10.3

-7.8

-4.5

-3.0

0.3

2.5

2.5

-0.3

-4.1

-6.2

-9.7

-12.4

mean no. of days with air frost

7.5

7.7

6.3

4.9

1.0

0.0

0.0

0.0

0.0

1.4

5.9

6.6

41.3

mean no. of days with ground frost

15.3

15.0

13.1

12.8

6.3

1.1

0.1

0.1

1.6

4.5

11.0

13.5

94.3

RELATIVE HUMIDITY (%)

mean at 0900UTC

87

86

84

80

77

77

79

81

84

86

87

87

83

mean at 1500UTC

82

77

72

68

68

68

68

68

71

76

81

83

74

SUNSHINE (hours)

mean daily duration

1.63

2.38

3.04

4.85

5.65

5.63

5.01

4.83

4.04

3.07

2.16

1.42

3.64

greatest daily duration

8.1

9.2

10.9

13.6

15.4

16.0

15.4

14.4

12.3

9.8

8.5

6.9

16.0

mean no. of days with no sun

10

7

5

2

2

2

1

2

3

5

7

11

55

RAINFALL (mm)

mean monthly total

63.9

48.6

50.3

50.8

58.1

52.6

46.9

68.5

63.3

68.6

65.9

73.6

711.1

greatest daily total

31.4

42.8

30.0

35.3

34.3

108.6

41.4

73.0

32.1

48.5

58.4

42.9

108.6

mean no. of days with >= 0.2mm

18

14

17

14

15

14

14

14

15

16

16

17

185

mean no. of days with >= 1.0mm

13

10

12

10

11

10

9

10

10

11

11

12

131

mean no. of days with >= 5.0mm

5

3

3

3

4

3

3

4

4

4

4

5

45

WIND (knots)

mean monthly speed

14.1

12.5

12.8

10.1

9.1

8.7

8.9

8.7

10.1

11.2

12.3

13.3

11.0

max. gust

80

78

71

59

63

53

58

58

69

65

68

81

81

max. mean 10-minute speed

57

54

47

43

43

36

39

39

46

44

49

57

57

mean no. of days with gales

5.2

2.7

2.7

0.6

0.5

0.1

0.1

0.2

0.6

1.4

2.4

3.7

20.3

WEATHER (mean no. of days with..)

snow or sleet

4.6

4.8

3.5

1.4

0.1

0.0

0.0

0.0

0.0

0.0

0.4

2.1

16.9

snow lying at 0900UTC

2.4

1.8

0.4

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.1

0.5

5.3

hail

0.8

1.2

2.8

2.2

1.3

0.5

0.1

0.1

0.3

0.1

0.7

0.6

10.7

thunder

0.0

0.1

0.2

0.3

0.9

0.9

0.8

0.6

0.3

0.2

0.2

0.1

4.8

fog

2.5

2.3

1.8

2.4

1.6

1.4

1.2

2.8

2.9

2.7

1.8

2.3

25.9

 

 
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