January weather forecastMerrimack, NH
January
Weather in January
January for Merrimack, New Hampshire tends to reveal a winter's firm grip with a moderate level of precipitation. Amid this month, the city also experiences shorter daylight hours, typically amounting to approximately 9.4 hours. In January, temperatures generally range from a high of 30.6°F (-0.8°C) to a low of 18°F (-7.8°C). Heavy clothing is a must while venturing outdoors, due to the cold winds sweeping across the city. It's a season associated with quiet, frost-covered mornings.Temperature
Temperature records mark January as the coldest month, with highs averaging 30.6°F (-0.8°C) and lows at 18°F (-7.8°C).Humidity
In January, the average relative humidity in Merrimack, New Hampshire, is 80%.Rainfall
January is the month with the least rainfall in Merrimack. Rain falls for 4.1 days and accumulates 0.75" (19mm) of precipitation.Snowfall
Months with snowfall in Merrimack are January through May, October through December. In Merrimack, in January, during 7.1 snowfall days, 2.4" (61mm) of snow is typically accumulated. In Merrimack, during the entire year, snow falls for 26.1 days and aggregates up to 11.54" (293mm) of snow.Daylight
The average length of the day in January in Merrimack is 9h and 27min.On the first day of the month, sunrise is at 7:16 am and sunset at 4:22 pm. On the last day of January, sunrise is at 7:01 am and sunset at 4:56 pm EST.
Sunshine
The average sunshine in January in Merrimack is 5.1h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Merrimack. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 during January translates into the following guidance:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Merrimack, NH
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in January: 18°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in January
Merrimack, NH
- Average pressure in January: 30.01"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Merrimack, NH
- Average wind speed in January: 8.3mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in January
Merrimack, NH
- Average humidity in January: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in January
Merrimack, NH
- Average rainfall in January: 0.75"
The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in January
Merrimack, NH
- Average rainfall days in January: 4.1 days
The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in January
Merrimack, NH
- Average snowfall in January: 2.4"
The month with the highest snowfall is December (2.99").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Merrimack, NH
- Average snowfall days in January: 7.1 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Merrimack, NH
- Average daylight in January: 9h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 5h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in January
Merrimack, NH
- Average sunshine days in January: 21.3 days
The months with the most sunshine days are January and December (21.3 days).
The month with the least sunshine days is June (16.7 days).
Average UV index in January
Merrimack, NH
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Merrimack, NH
- Average cloud cover in January: 45
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in January
Merrimack, NH
- Average visibility in January: 6mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
