GWRRA Georgia Chapter S Southern Wings

Wind Chill Table

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Wind Chill Table
 

With cool weather just around the corner, use this chart to calculate the true air temperature so you can dress (layer) for optimum warmth & protection during your ride

Wind Chill Table

Wind speed (in mph)

still air temperature (degrees F)

100

90

80

70

60

50

40

30

20

10

0

-10

-20

-30

wind chill temperature

0

100

90

80

70

60

50

40

30

20

10

0

-10

-20

-30

5

100

90

79

69

58

48

37

27

16

6

-5

-15

-26

-36

10

102

90

77

65

53

41

28

16

4

-9

-21

-33

-46

-58

15

103

90

76

63

49

36

22

9

-4

-18

-31

-45

-58

-72

20

104

89

75

61

47

33

18

4

-10

-24

-39

-53

-67

-81

25

104

89

75

60

45

30

15

1

-14

-29

-44

-59

-73

-88

30

104

89

74

59

44

28

13

-2

-17

-32

-48

-63

-78

-93

35

105

89

74

58

43

27

12

-4

-19

-35

-51

-66

-82

-97

40

105

89

73

58

42

26

10

-5

-21

-37

-53

-68

-84

-100

45

105

89

73

57

42

26

10

-6

-22

-38

-54

-70

-86

-101

50

105

89

73

57

41

25

9

-7

-23

-39

-55

-71

-86

-102

55

105

89

73

57

41

25

9

-7

-23

-39

-55

-71

-87

-103

60

105

89

73

57

41

25

9

-7

-23

-39

-55

-71

-87

-102

65

105

89

73

57

41

26

10

-6

-22

-38

-54

-70

-86

-102

70

105

89

73

58

42

26

10

-6

-21

-37

-53

-69

-85

-101

75

105

89

74

58

42

26

11

-5

-21

-36

-52

-68

-83

-99

80

105

89

74

58

43

27

12

-4

-19

-35

-50

-66

-81

-97

85

105

89

74

59

43

28

13

-3

-18

-33

-49

-64

-79

-95

 

Note: Wind speeds greater than 40mph add little to the effect

 

 

 

 

No protection required

Little danger if properly clothed

Increasing Danger of freezing exposed skin

Great Danger of freezing exposed skin

Formula used to calculate Wind chill

Wind chill = 91.4 - (0.474677 - 0.020425 * W + 0.303107 * SQRT(W)) * (91.4 - T)

where W = wind speed (mph)
and
T = temperature ( F)