McHenry Weather in December

December in McHenry averages 4°C (39°F) during the day and -4°C (25°F) at night. Quite a bit of snow/rainfall is typical this month, with around 134 mm (5.3 in) on average. An umbrella is a good idea.

Rainfall in McHenry in December

You can expect snow/rain on roughly 19 days based on historical data, averaging 134 mm (5.3 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in McHenry in December

Expect highs of 4°C (39°F) in McHenry in December, with nights dropping to around -4°C (25°F). The month of December belongs to the winter season. Expect a distinctly cold feel throughout the day, not just overnight. Nights are well below freezing at -4°C (25°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation. This month is marked by cold temperatures, so wearing layers is key to staying warm. Don't be caught off-guard by the cold.

Sunshine in McHenry in December

With limited sunshine this month, there are about 78 hours of sun. It's ideal for those who prefer a cooler, cloudier climate.

December in McHenry can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.