Merrimack Weather in May

May in Merrimack averages 21°C (70°F) during the day and 9°C (48°F) at night. Quite a bit of rainfall is typical this month, with around 95 mm (3.7 in) on average. An umbrella is a good idea.

Rainfall in Merrimack in May

Rain is expected on roughly 14 days, totalling around 95 mm (3.7 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Merrimack in May

Weather in Merrimack is at its perfect in May. Highs reach 21°C (70°F), while nights settle around 9°C (48°F). The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Merrimack in May

The month enjoys around 258 hours of sunshine, creating mostly sunny days with good weather conditions.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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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.

Merrimack Temperature in May

Min Temperature 9°C (48°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 47%  

Precipitation 95 mm (3.7 in)  

Rainy days 14 days  

Humidity 65% *  

Sunshine 258 hours *  

Percentage Sunshine *  

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

What to Wear in Merrimack in May

Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Merrimack in May

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

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

4/10

Outdoor sports

9/10

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.