When do we see frost and dew outside?

Frost typically occurs on clear, calm nights when temperatures drop to or below the freezing point (32°F or 0°C), allowing moisture in the air to crystallize. Dew forms when temperatures cool overnight, causing moisture to condense on surfaces as the air reaches its dew point, usually during early morning hours. Both phenomena are more common in the late spring and fall, when temperature fluctuations are more pronounced.