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, on average, is the coldest month, registering a high temperature of 35.6°F (2°C) and a low of 23.2°F (-4.9°C).Humidity
In Manville, the average relative humidity in January is 76%.Rainfall
In Manville, in January, during 9.2 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, there are 157.9 rainfall days, and 28.19" (716mm) of precipitation is accumulated.Snowfall
Months with snowfall in Manville are January through May, October through December. In Manville, during January, snow falls for 6.8 days and regularly aggregates up to 1.97" (50mm) of snow. In Manville, during the entire year, snow falls for 23.8 days and aggregates up to 9.53" (242mm) of snow.Daylight
The average length of the day in January in Manville is 9h and 40min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:41 pm. On the last day of January, in Manville, sunrise is at 7:08 am and sunset at 5:14 pm EST.
Sunshine
In Manville, the average sunshine in January 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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 2 in January translates into the following instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is January?
What is the average humidity in January in Manville?
How much does it rain in January?
How many days does it snow in January?
What is the average length of the day in January in Manville?
When are sunrise and sunset in January?
How many hours of sunshine does Manville have in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Manville, NJ
- Average high temperature in January: 35.6°F
The warmest month (with the highest average high temperature) is July (84.2°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°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in January
Manville, 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
Manville, 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 (5.3mph).
Average humidity in January
Manville, NJ
- Average humidity in January: 76%
The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (74%).
Average rainfall in January
Manville, NJ
- Average rainfall in January: 1.81"
The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in January
Manville, NJ
- Average rainfall days in January: 9.2 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (9 days).
Average snowfall in January
Manville, NJ
- Average snowfall in January: 1.97"
The month with the highest snowfall is March (2.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Manville, NJ
- Average snowfall days in January: 6.8 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Manville, 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 18min).
- Average sunshine in January: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in January
Manville, NJ
- Average sunshine days in January: 18.2 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (11.7 days).
Average UV index in January
Manville, 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
Manville, NJ
- Average cloud cover in January: 45
The months with the most cloud cover are February and December (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in January
Manville, 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).
Manville, New Jersey, USA
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