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.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
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• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Merrimack's climate page.

Merrimack Temperature in December

Min Temperature -5°C (23°F)  

Max Temperature 4°C (39°F)  

Chance of Rain 42%  

Precipitation 120 mm (4.7 in)  

Rainy days 13 days  

Humidity 72% *  

Sunshine 134 hours *  

Percentage Sunshine *  

* Data from: Concord, the United States of America (38 KM, 23 Miles).

What to Wear in Merrimack in December

Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Merrimack in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

3/10

Walking

3/10

Camping

1/10

Outdoor sports

3/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Merrimack's climate page.

More climate data for Merrimack

Temperature Rainfall Sunshine Humidity

See the full Merrimack climate overview or explore weather in the United States of America.