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
Jamesburg's temperature records reveal January as the coldest month, marked by average highs of 37°F (2.8°C) and lows of 25°F (-3.9°C).Humidity
In January, the average relative humidity is 75%.Rainfall
In Jamesburg, during January, the rain falls for 4.8 days and regularly aggregates up to 0.43" (11mm) of precipitation. In Jamesburg, during the entire year, the rain falls for 92.9 days and collects up to 7.32" (186mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Jamesburg, during January, snow falls for 3.3 days and regularly aggregates up to 0.28" (7mm) of snow. In Jamesburg, during the entire year, snow falls for 12.7 days and aggregates up to 1.5" (38mm) of snow.Daylight
In Jamesburg, the average length of the day in January is 9h and 41min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:41 pm. On the last day of January, sunrise is at 7:07 am and sunset at 5:14 pm EST.
Sunshine
In Jamesburg, the average sunshine in January is 5.1h.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 estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 2 during January translates into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is it in Jamesburg in January?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
How many hours of daylight does Jamesburg have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Jamesburg have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Jamesburg, NJ
- Average high temperature in January: 37°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 (37°F).
- Average low temperature in January: 25°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in January
Jamesburg, 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
Jamesburg, NJ
- Average wind speed in January: 9.1mph
The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in January
Jamesburg, NJ
- Average humidity in January: 75%
The months with the highest relative humidity are February, May, October and December (77%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in January
Jamesburg, NJ
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is July (0.94").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in January
Jamesburg, NJ
- Average rainfall days in January: 4.8 days
The month with the highest number of rainy days is July (10.7 days).
The months with the least rainy days are January and November (4.8 days).
Average snowfall in January
Jamesburg, NJ
- Average snowfall in January: 0.28"
The month with the highest snowfall is March (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Jamesburg, NJ
- Average snowfall days in January: 3.3 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Jamesburg, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Jamesburg, NJ
- Average sunshine days in January: 24.2 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in January
Jamesburg, 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
Jamesburg, NJ
- Average cloud cover in January: 44
The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in January
Jamesburg, NJ
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Jamesburg, New Jersey, USA
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