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When to go · Merrimack

Merrimack in December

Mixed month. Outside the best window (May–Oct). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.

Key facts

Verdict
Mixed
Temperature
5°C (41°F) / −3°C (27°F)
average high / low
Rain days
9
Crowds
High
United States overall
Prices
High
United States overall

Verdict

MixedUnited States month rating

Outside the best window (May–Oct). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.

Is another month better than December?

December is rated mixed. These months rate higher:

Weather in December

Long-term averages
  • MerrimackHighs around 5 °C (41 °F), lows around -3 °C (27 °F), rain on about 9 days

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Christmas Day big impact

    25 Dec · United States

    Most businesses closed; flights full from about 20 Dec to 2 Jan.

Crowds and prices

Crowds · United States overall
High
Prices · United States overall
High

United States overall: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.

High-price month: see what to book ahead.

Compare two months

Weather, crowds and prices for any two months in Merrimack, side by side.

  • Verdict

    Dec: Mixed

    May: Great (better)

  • Daytime high

    Dec: 5 °C (41 °F)

    May: 21 °C (70 °F)

  • Night low

    Dec: -3 °C (27 °F)

    May: 10 °C (50 °F)

  • Rain days

    Dec: 9

    May: 9

  • Crowds

    Dec: High

    May: Medium

  • Prices

    Dec: High

    May: Medium

  • Festivals listed

    Dec: 1

    May: 1

December: Outside the best window (May–Oct). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.

May: Inside Merrimack's best window: May–Oct.

Merrimack: figures are long-term averages from this guide, not a forecast.

What to pack

  • A warm coat, hat and gloves for mornings and evenings

Build the full packing list for your trip →

Across United States in December →