Merrillville Weather in December

Merrillville in December averages 3°C (37°F) during the day and -5°C (23°F) at night. This is part of the winter season, and quite a bit of snow/rainfall is expected this month.

Rainfall in Merrillville in December

On average, there are about 14 days with snow/rain during this month, averaging 76 mm (3 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Merrillville in December

In December, Merrillville sees low temperatures, with highs of 3°C (37°F). Nights drop to around -5°C (23°F). This month falls in the winter season. It stays very cold throughout much of the day, so warm winter clothing is essential. With lows of -5°C (23°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated. As one of the coldest months, it's important to layer up to stay warm. Don't let the chill catch you off-guard.

Sunshine in Merrillville in December

You can expect a moderate amount of sunlight, with approximately 107 hours. This means a pleasant mix of sun and overcast.

December in Merrillville 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.