no.
none of your beeswax
The air near the ground cools to the DEW POINT.
dew
Dew forms on clear nights because the ground loses heat through radiation, causing temperatures to drop. As the temperature falls, moisture in the air condenses on surfaces when they cool below the dew point. Conversely, on cloudy nights, clouds act as an insulating layer, trapping heat and preventing the ground from cooling sufficiently for dew to form. This is why dew is more likely to occur on clear nights compared to cloudy ones.
DEW
When water vapor reaches its dew point it then becomes saturated. Either the vapor falls as rain, or if it is a cool clear night it forms as dew on surfaces. if the surface is cold enough it can also form as frost.
Dew drops form more rapidly on clear nights because the absence of clouds allows for greater heat loss from the Earth's surface through radiation. Without clouds to trap heat, the ground cools quickly, causing the temperature to drop to the dew point, where moisture in the air condenses into droplets. In contrast, cloudy nights retain some of the heat, preventing the surface temperature from dropping sufficiently to facilitate dew formation.
dew
Those drops of water are called dew. Dew forms when the temperature of the surface cools down and reaches the dew point, causing water vapor in the air to condense and form small droplets.
Condensation of water vapor causes dew.
dew, due, do
That depends entirely upon where you are in the world but dew is unconnected to time of year as such. It forms when it cools enough at night for the RH to get to 100%. In some parts of the world that could be every night, in others never or very rarely.