McLean Weather in December

December in McLean averages 9°C (48°F) during the day and 0°C (32°F) at night. Quite a bit of snow/rainfall is typical this month, with around 100 mm (3.9 in) on average. An umbrella is a good idea.

Rainfall in McLean in December

This month experiences about 11 days of snow/rain according to historical data, averaging 100 mm (3.9 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in McLean in December

Temperatures in McLean in December top out at 9°C (48°F) and drop to 0°C (32°F) overnight. Experience the winter season in December. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. With overnight lows of 0°C (32°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold.

Sunshine in McLean in December

The area experiences a moderate amount of sunshine, with approximately 130 hours of sunlight expected. This means a decent mix of sun and overcast.

Wind Speed in McLean in December

Wind speeds average 4 m/s (8 knots) during December. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

December in McLean has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.