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, with an average high of 36.5°F (2.5°C) and a low of 23.5°F (-4.7°C), signifies the coldest month of the year.Humidity
The average relative humidity in January is 76%.Rainfall
In January, the rain falls for 5.8 days. Throughout January, 0.47" (12mm) of precipitation is accumulated. In Hopewell, during the entire year, the rain falls for 107.3 days and collects up to 8.82" (224mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Hopewell, during January, snow falls for 3.7 days and regularly aggregates up to 0.47" (12mm) of snow. Throughout the year, there are 15.5 snowfall days, and 2.76" (70mm) of snow is accumulated.Daylight
In Hopewell, the average length of the day in January is 9h and 41min.On the first day of January in Hopewell, New Jersey, sunrise is at 7:21 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:09 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 estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In January, a daily UV index of 2 turns into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. 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?
How cold is it in January?
What is the average humidity in January?
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?
When are sunrise and sunset in January?
How many hours of sunshine does Hopewell have in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Hopewell, NJ
- Average high temperature in January: 36.5°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.5°F).
- Average low temperature in January: 23.5°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in January
Hopewell, 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
Hopewell, NJ
- Average wind speed in January: 8.4mph
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
Hopewell, NJ
- Average humidity in January: 76%
The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (74%).
Average rainfall in January
Hopewell, NJ
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is July (1.18").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in January
Hopewell, NJ
- Average rainfall days in January: 5.8 days
The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is November (5.5 days).
Average snowfall in January
Hopewell, NJ
- Average snowfall in January: 0.47"
The month with the highest snowfall is March (0.75").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Hopewell, NJ
- Average snowfall days in January: 3.7 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Hopewell, 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 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 42min).
Average sunshine days in January
Hopewell, NJ
- Average sunshine days in January: 22.3 days
The month with the most sunshine days is November (22.7 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in January
Hopewell, 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
Hopewell, NJ
- Average cloud cover in January: 44
The months with the most cloud cover are February and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in January
Hopewell, 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).
Hopewell, New Jersey, USA
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