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 sea temperature 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 is the coldest month, with an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 28.8°F (-1.8°C).Humidity
The average relative humidity in January is 74%.Rainfall
The month with the least rainfall in Rumson, New Jersey, is January, when the rain falls for 6.5 days and typically collects 0.63" (16mm) of precipitation.Snowfall
Months with snowfall are January through March, October and December. In January, in Rumson, it is snowing for 3.9 days. Throughout January, 0.39" (10mm) of snow is accumulated. In Rumson, during the entire year, snow falls for 14.2 days and aggregates up to 1.69" (43mm) of snow.Ocean temperature
In Rumson, in January, the average water temperature is 42.4°F (5.8°C).Note: While a brief time in 42.4°F (5.8°C) at 55.4°F (13°C) is already bracing, plunging below 50°F (10°C) can severely affect breathing and introduce a cold shock, relying on your physical state.
Daylight
In Rumson, the average length of the day in January is 9h and 41min.On the first day of January, sunrise is at 7:18 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:12 pm EST.
Sunshine
In Rumson, the average sunshine in January is 5.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Boost your sun resistance with garments that are densely woven yet spacious. 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 month is the coldest in Rumson?
How cold is it in Rumson in January?
What is the average humidity in January in Rumson?
What is the driest month in Rumson?
How many days does it rain in January in Rumson?
How much does it snow in Rumson in January?
What is the water temperature in January in Rumson?
How many hours of daylight does Rumson have in January?
What time are sunrise and sunset in January in Rumson?
How long on average sun shines in January in Rumson?
When is the lowest UV index in Rumson?
What is the UV index intensity in January in Rumson?
Average temperature in January
Rumson, NJ
- Average high temperature in January: 37.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in January: 28.8°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in January
Rumson, NJ
- Average pressure in January: 30.06"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
Rumson, NJ
- Average wind speed in January: 12.4mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in January
Rumson, NJ
- Average humidity in January: 74%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is November (73%).
Average rainfall in January
Rumson, NJ
- Average rainfall in January: 0.63"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in January
Rumson, NJ
- Average rainfall days in January: 6.5 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in January
Rumson, NJ
- Average snowfall in January: 0.39"
The month with the highest snowfall is December (0.47").
The months with the least snowfall are April, May, June, July, August, September and November (0").
Average snowfall days in January
Rumson, NJ
- Average snowfall days in January: 3.9 days
The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average sea temperature in January
Rumson, NJ
- Average sea temperature in January: 42.4°F
The best month for swimming (with the highest average sea temperature) is August (74.5°F).
The coldest month (with the lowest average sea temperature) is February (40.1°F).
Average daylight in January /
Average sunshine in January
Rumson, 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 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in January
Rumson, NJ
- Average sunshine days in January: 21.2 days
The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (13 days).
Average UV index in January
Rumson, 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, November and December (UV index 2).
Average cloud cover in January
Rumson, NJ
- Average cloud cover in January: 43
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in January
Rumson, 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).
Rumson, New Jersey, USA
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