Greenhouse temperature adjusting

Changing greenhouse temperature will change its humidity. If the greenhouse humidity is 100% and temperature is 5 centigrade, when the temperature goes up each 1 centigrade, the humidity will reduce by 3% to 4%. But when the temperature reduces to 18 centigrade, the relative humidity will rise up to 85%. When the temperature reduces to 16 centigrade, the relative humidity will reach nearly 100%.
Another method to reduce the greenhouse humidity is change air ventilation. After irrigation every time, the greenhouse must be open to push the humid air out and let the fresh air in.

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