| Degree of heat or cold, such as high and low temperature, normal or extreme temperature. |
Level of moisture in the air, such as high or low humidity. |
Pressure of the surrounding air, such as pressure related to height above sea level or meteorological conditions. |
Falling of moisture, such as rain, dew, snow, sleet and hail. |
Air in more or less rapid natural motion, such as a breeze, gale or gust. |
Natural, regular and predictable changes from one season to the next, such as summer, autumn, winter and spring. |
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