Wind Chill

Wind Chill Temperature (oF) Rating Description
+32 to +15 Cold Wind Chill is the term used to describe the rate of heat loss on the human body resulting from the combined effect of low temperature and wind. As winds increase, heat is carried away from the body at a faster rate, driving down both the skin temperature and eventually the internal body temperature. While exposure to low wind chills can be life threatening to both humans and animals alike, the only effect that wind chill has on inanimate objects, such as vehicles, is that it shortens the time that it takes the object to cool to the actual air temperature (it cannot cool the object down below that temperature).
+15 to Zero Very Cold
Zero to -20 Bitter Cold
Below -20 Extreme Cold

WIND
SPEED (MPH)		 Temperatures are in degrees Fahrenheit (oF) across the top. Winds are in miles per hour down the left side. Wind speeds greater than 40 mph have little added effect.
AIR TEMPERATURE (oF)
35 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 -45
4 35 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 -45
5 32 27 22 16 11 6 0 -5 -10 -15 -21 -26 -31 -36 -42 -47 -52
10 22 16 10 3 -3 -9 -15 -22 -27 -34 -40 -46 -52 -58 -64 -71 -77
15 16 9 2 -5 -11 -18 -25 -31 -38 -45 -51 -58 -65 -72 -78 -85 -92
20 12 4 -3 -10 -17 -24 -31 -39 -46 -53 -60 -67 -74 -81 -88 -95 *
25 8 1 -7 -15 -22 -29 -36 -44 -51 -59 -66 -74 -81 -88 -96 * *
30 6 -2 -10 -18 -25 -33 -41 -49 -56 -64 -71 -79 -86 -93 * * *
35 4 -4 -12 -20 -27 -35 -43 -52 -58 -67 -74 -82 -89 -97 * * *
40 3 -5 -13 -21 -29 -37 -45 -53 -60 -69 -76 -84 -92 * * * *
45 2 -6 -14 -22 -30 -38 -46 -54 -62 -70 -78 -85 -93 * * * *
*-denotes wind chill temperatures colder than 100oF below Zero in this region

Heat Index Table

Heat index (or apparent temperature) is how the heat and humidity in the air combine to make us feel. Higher humidity plus higher temperatures often combine to make us feel a perceived temperature that is higher than the actual air temperature. The old saying, "its not the heat, its the humidty" holds true.
HEAT INDEXaffects on the human body
90 to 105heat stroke possible with prolonged exposure
105 to 130heat stroke likely with prolonged exposure
130 or aboveheat stroke highly likely with continued exposure

RELATIVE
HUMIDITY		 AIR TEMPERATURE (oF)
70 75 80 85 90 95 100 105 110 115 120
30 67 73 78 84 90 96 104 113 123 135 148
35 67 73 79 85 91 98 107 118 130 143
40 68 74 79 86 93 101 110 123 137 151
45 68 74 80 87 95 104 115 129 143
50 69 75 81 88 96 107 120 135 150
55 69 75 81 89 98 110 126 142
60 70 76 82 90 100 114 132 149
65 70 76 83 91 102 119 138
70 70 77 85 93 106 124 144
75 70 77 86 95 109 130
80 71 78 86 97 113 136
85 71 78 87 99 117
90 71 79 88 102 122
95 71 79 89 105
100 72 80 91 108
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