January weather forecastMartinsville, NJ
January
Weather in January
January, like December, in Martinsville, New Jersey, is another cold winter month, with an average temperature fluctuating between 35.6°F (2°C) and 23.2°F (-4.9°C).Temperature
The coldest month is January, with an average high-temperature of 35.6°F (2°C) and an average low-temperature of 23.2°F (-4.9°C).Humidity
The average relative humidity in January in Martinsville is 76%.Rainfall
In Martinsville, in January, it is raining for 8.4 days, with typically 2.17" (55mm) of accumulated precipitation. In Martinsville, during the entire year, the rain falls for 155.4 days and collects up to 31.18" (792mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Martinsville, in January, snow falls for 7.8 days, with typically accumulated 2.48" (63mm) of snow. Throughout the year, in Martinsville, there are 26.7 snowfall days, and 12.68" (322mm) of snow is accumulated.Daylight
In Martinsville, the average length of the day in January is 9h and 40min.On the first day of January, sunrise is at 7:21 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:14 pm EST.
Sunshine
In January, the average sunshine is 5h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In January, the maximum UV index of 2 transforms into these recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Martinsville, NJ
- Average high temperature in January: 35.6°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in January: 23.2°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in January
Martinsville, NJ
- Average pressure in January: 30.07"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Martinsville, NJ
- Average wind speed in January: 8.4mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in January
Martinsville, NJ
- Average humidity in January: 76%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in January
Martinsville, NJ
- Average rainfall in January: 2.17"
The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in January
Martinsville, NJ
- Average rainfall days in January: 8.4 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in January
Martinsville, NJ
- Average snowfall in January: 2.48"
The month with the highest snowfall is March (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Martinsville, NJ
- Average snowfall days in January: 7.8 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Martinsville, NJ
- Average daylight in January: 9h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in January
Martinsville, NJ
- Average sunshine days in January: 17.8 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in January
Martinsville, NJ
- 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
Martinsville, NJ
- Average cloud cover in January: 45
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in January
Martinsville, NJ
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
