Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Merrimack Weather in September
September is one of the excellent months to visit Merrimack, with daytime temperatures of 24°C (75°F) and lows of 11°C (52°F) at night. Do note that quite a bit of rainfall is typical, averaging around 92 mm (3.6 in).
Rainfall in Merrimack in September
Historically, the month has about 10 days of rain, averaging 92 mm (3.6 in) in total. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Merrimack in September
September is one of the better months to visit Merrimack. Expect 24°C (75°F) during the day and 11°C (52°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Merrimack in September
With approximately 214 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If your ideal day consists of dry skies and pleasant temperatures, May, July and September typically offer the best circumstances for Merrimack.
Merrimack Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
24°C (75°F)
Chance of Rain
32%
Precipitation
92 mm (3.6 in)
Rainy days
10 days
Humidity
76% *
Sunshine
214 hours *
Percentage Sunshine
*
* Data from: Concord, the United States of America (38 KM, 23 Miles).
Merrimack Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Merrimack - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Merrimack in September
Comfortable temperatures call for an easy wardrobe in September. 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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Merrimack in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling9/10 -
Walking9/10 -
Barbeque8/10 -
Camping8/10 -
Outdoor sports9/10
Merrimack 3-Day Forecast
More climate data for Merrimack
Temperature Rainfall Sunshine Humidity
See the full Merrimack climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
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Need travel inspiration? Check out our bucket list articles and be inspired.
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