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 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, known for its average high temperature of 36.9°F (2.7°C) and an average low temperature of 24.8°F (-4°C), is the coldest month.Humidity
The average relative humidity in January is 75%.Rainfall
The month with the least rainfall is January, when the rain falls for 7.9 days and typically collects 1.85" (47mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Slackwoods. In Slackwoods, in January, during 4.8 snowfall days, 1.69" (43mm) of snow is typically accumulated. In Slackwoods, during the entire year, snow falls for 16.6 days and aggregates up to 8.86" (225mm) of snow.Daylight
In January, the average length of the day in Slackwoods, New Jersey, is 9h and 41min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:43 pm. On the last day of January, in Slackwoods, New Jersey, sunrise is at 7:08 am and sunset at 5:15 pm EST.
Sunshine
In January, the average sunshine 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. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: In January, the maximum UV index of 2 suggests these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Slackwoods?
How cold is it in Slackwoods in January?
What is the average humidity in January in Slackwoods?
What is the driest month in Slackwoods?
How much does it rain in Slackwoods in January?
How many days does it snow in January in Slackwoods?
What is the average length of the day in January in Slackwoods?
When is the sunrise / sunset in January in Slackwoods?
How many hours of sunshine does Slackwoods have in January?
What are the months with the lowest UV index in Slackwoods?
What is the UV index reading in January in Slackwoods?
Average temperature in January
Slackwoods, NJ
- Average high temperature in January: 36.9°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in January: 24.8°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in January
Slackwoods, NJ
- Average pressure in January: 30.08"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
Slackwoods, NJ
- Average wind speed in January: 8.3mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in January
Slackwoods, NJ
- Average humidity in January: 75%
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in January
Slackwoods, NJ
- Average rainfall in January: 1.85"
The wettest month (with the highest rainfall) is July (3.74").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in January
Slackwoods, NJ
- Average rainfall days in January: 7.9 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in January
Slackwoods, NJ
- Average snowfall in January: 1.69"
The month with the highest snowfall is March (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Slackwoods, NJ
- Average snowfall days in January: 4.8 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Slackwoods, NJ
- Average daylight in January: 9h and 4min
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 24min).
- Average sunshine in January: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in January
Slackwoods, NJ
- Average sunshine days in January: 19.5 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in January
Slackwoods, NJ
- Average UV index in January: 2
The months with the highest UV index are May, 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
Slackwoods, NJ
- Average cloud cover in January: 44
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in January
Slackwoods, NJ
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Slackwoods, New Jersey, USA
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