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, recording an average high temperature of 35.6°F (2°C) and a low temperature of 23.2°F (-4.9°C), is Raritan's coldest month.Humidity
In January, the average relative humidity in Raritan is 76%.Rainfall
In January, in Raritan, the rain falls for 9.2 days. Throughout January, 1.81" (46mm) of precipitation is accumulated. In Raritan, New Jersey, during the entire year, the rain falls for 157.9 days and collects up to 28.19" (716mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Raritan. In January, it is snowing for 6.8 days. Throughout January, 1.97" (50mm) of snow is accumulated. In Raritan, during the entire year, snow falls for 23.8 days and aggregates up to 9.53" (242mm) of snow.Daylight
In January, the average length of the day in Raritan 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, sunrise is at 7:09 am and sunset at 5:14 pm EST.
Sunshine
In Raritan, the average sunshine in January is 5h.UV index
The months with the lowest UV index in Raritan, New Jersey, 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 rays for the average person.Note: In January, the maximum UV index of 2 transforms into these recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Raritan?
How cold is it in Raritan in January?
What is the average humidity in January in Raritan?
How much does it rain in Raritan in January?
How many days does it snow in January in Raritan?
What is the average length of the day in January in Raritan?
When are sunrise and sunset in January in Raritan?
How many hours of sunshine does Raritan have in January?
When is the lowest UV index in Raritan?
What is the UV index intensity in January in Raritan?
Average temperature in January
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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
Raritan, 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).
Raritan, New Jersey, USA
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