When you water your lawn in the summer, much of the water is lost through evaporation due to hot temperatures and exposure to scorching sunlight. However, as temperatures go down and the weather turns grim, there is less of a need for extensive watering.
Depending on the type of grass you own, you might need to water it more or less extensively during the entire year. Some species prefer to have more water, while others can do well in dry weather and even in droughts. Typically, you will gain the best results by watering your lawn with up to about 1-2 inches of water from spring to autumn, culminating in the largest volume of water during the months of July and August. In the winter, however, you won’t need as much water, although it’s still a good idea to water your lawn along with applying a good organic lawn fertilizer in Fall, especially in areas where conditions are dry.
About ½ of an inch is ideal when it comes to watering your lawn in the winter. This amount is pretty good especially when there isn’t much rain or snow, as your lawn will respond quite well and stay healthy. Although you might think cold season grasses would need more, that’s not the case, since not much water is actually lost in evaporation, so the soil can stay pretty moist without extensive watering.