At the same time the furnace may start running and dry the air out, causing the soil to dry out more quickly. Concern about overwatering resting plants in winter must be tempered by consideration of the effect of lower house humidity. These terms can be confusing. They are not precise and can be interpreted in ways which result in plant injury. Few plants are able to grow in constantly soggy soil.
Few plants can last long in soil which has dried out completely.
Between these two extremes is plenty of room for watering mistakes. When the soil surface has barely begun to dry, water the plant. The plant able to grow, sitting in a constant supply of water, is the exception not the rule. At no time should all of the soil in the pot become dry. Use watering terms as guides, not rules, as to how a plant should be watered.