Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January, marked by an average high-temperature of 31.8°F (-0.1°C) and a low-temperature of 21.2°F (-6°C), is the coldest month.Humidity
In January, the average relative humidity is 79%.Rainfall
In New Castle, New Hampshire, in January, it is raining for 7.5 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, there are 144.2 rainfall days, and 27.48" (698mm) of precipitation is accumulated.Snowfall
Months with snowfall in New Castle are January through April, October through December. January is the month with the most snowfall in New Castle, New Hampshire. Snow falls for 8.8 days and accumulates 4.02" (102mm) of snow.Ocean temperature
In January, the average ocean temperature is 41.5°F (5.3°C).Note: Danger awaits those who swim in 41.5°F (5.3°C) without protection. Falling below 50°F (10°C) means intense cold shock and hyperventilation.
Daylight
In January, the average length of the day is 9h and 26min.On the first day of January in New Castle, sunrise is at 7:14 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:53 pm EST.
Sunshine
The average sunshine in January in New Castle 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 New Castle. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What are the coldest months in New Castle?
How cold is January in New Castle?
What is the average humidity in January in New Castle?
How much does it rain in New Castle in January?
When does it snow the most in New Castle?
How much does it snow in New Castle in January?
What is the water temperature in January in New Castle?
How many hours of daylight does New Castle have in January?
When is the sunrise / sunset in January in New Castle?
How long on average sun shines in January in New Castle?
What are the months with the lowest UV index in New Castle?
How high is the UV index in January in New Castle?
Average temperature in January
New Castle, NH
- Average high temperature in January: 31.8°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in January: 21.2°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in January
New Castle, NH
- Average pressure in January: 29.99"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
New Castle, NH
- Average wind speed in January: 11.7mph
The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in January
New Castle, NH
- Average humidity in January: 79%
The month with the highest relative humidity is June (80%).
The months with the lowest relative humidity are April and November (75%).
Average rainfall in January
New Castle, NH
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in January
New Castle, NH
- Average rainfall days in January: 7.5 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in January
New Castle, NH
- Average snowfall in January: 4.02"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
New Castle, NH
- Average snowfall days in January: 8.8 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in January
New Castle, NH
- Average sea temperature in January: 41.5°F
The best month for swimming (with the highest average sea temperature) is August (65.6°F).
The coldest month (with the lowest average sea temperature) is March (38.5°F).
Average daylight in January /
Average sunshine in January
New Castle, NH
- Average daylight in January: 9h and 2min
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 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in January
New Castle, NH
- Average sunshine days in January: 15.9 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in January
New Castle, NH
- Average UV index in January: 2
The months with the highest UV index are 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
New Castle, NH
- Average cloud cover in January: 45
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in January
New Castle, NH
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
New Castle, New Hampshire, USA
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