Merrimack Weather in December

Merrimack in December sees low temperatures, with highs around 4°C (39°F) and overnight lows of -5°C (23°F). Snow/rainfall is fairly high at around 120 mm (4.7 in) on average, so pack waterproofs just in case.

Rainfall in Merrimack in December

Snow/rain is expected on roughly 13 days, totalling around 120 mm (4.7 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Merrimack in December

In December, expect low temperatures in Merrimack, with highs of 4°C (39°F) and lows of -5°C (23°F) at night. This month falls in the winter season. Staying warm is the main priority this month, especially during mornings and evenings. 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. It's a frigid month, so wearing warm clothing is crucial. Don't underestimate the cold; prepare accordingly.

Sunshine in Merrimack in December

You can expect a moderate amount of sunlight, with approximately 134 hours. This means a pleasant mix of sun and overcast.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Merrimack. Our weather planner can help you explore destinations with more pleasant weather conditions.