METEOROLOGIST JEFF HABYMorning condensation (dew) is very common in part regions and can conveniently be forecasted. The favorable weather elements for dew encompass clear skies, light wind, decent soil moisture, and also low night-time dewpoint depressions. Dew creates when the temperature becomes equal to the dewpoint. This often happens an initial at soil level for two reasons. First, longwave emission causes the earth\"s surface to cool in ~ night. Condensation calls for the temperature to decrease to the dewpoint. Second, the floor is frequently the moisture source for the dew. Warm and also moist soils will help with the formation of dew as the floor cools overnight. The cooling the warm and moist soil during the night will cause condensation particularly on clear nights. Clean skies permit for the maximum relax of longwave radiation come space. Cloudy skies will reflect and absorb if re-emitting longwave radiation back to the surface and also that stays clear of as much cooling native occurring. Irradiate wind prevents the mix of air appropriate at the surface ar with drier wait aloft. More heavier dew will tend to occur when the wind is light together opposed to once the wind is strong. Specifically when soils space moist, the humidity concentration will certainly be higher near the earth\"s surface than greater above the earth\"ssurface. As the air with higher moisture concentration cools, this waiting will create condensation first. Floor moisture is EXTREMELY crucial to producing dew (especially hefty dew). Dry regions that have actually not received rain in end a week or two space much less likely to have morning dew (especially a heavy dew). As soon as the soil gets a good soaking indigenous a rain, it takes number of days for the soil to lose the moisture with evaporation. If nights room clear ~ a an excellent rain, dew deserve to be meant every morning for the next couple of days (especially in regions with abundant vegetation, clear skies and also light wind). The dewpoint depression is important because it determines just how much the wait will should cool to reach saturation. V a huge dewpoint depression (greater than 25 systems of F), rather a little of night-time cooling will need to take ar in stimulate to develop dew. A short dewpoint depression through the other factors favorable because that dew is more likely to produce heavy dew. Dew is crucial to forecast since it results people. Dew can produce a thick movie of water everywhere the automobile in the morning (can be especially annoying for people that don\"t have a garage). Time needs to be invested wiping the water turn off the home windows in stimulate to view on-coming traffic. Dew is likewise important to agriculture. Dew recharges the floor moisture and limits evaporation from the soil during the time the dew is forming. Dew deserve to make the mowing that the lawn an ext difficult. The is much less complicated to mow the lawn in the late afternoon as soon as the dew has actually evaporated than it is in the morning. Wet grass clumps together and sticks come everything.

You are watching: What causes dew on the grass

See more: Paper Mario Thousand Year Door Partner Upgrades, Which Partner Do I Upgrade

Also, girlfriend are much more prone to gaining a dirty shoe as soon as walking on dew covered grass as contrasted to dried grass.