January weather forecastRiverdale, NJ
January
Weather in January
January, like December, in Riverdale, New Jersey, is a wintry winter month, with an average temperature ranging between max 35.8°F (2.1°C) and min 25°F (-3.9°C).Temperature
Riverdale's temperature records reveal January as the coldest month, marked by average highs of 35.8°F (2.1°C) and lows of 25°F (-3.9°C).Humidity
The average relative humidity in January is 74%.Rainfall
In Riverdale, New Jersey, in January, during 5.4 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Riverdale, during the entire year, the rain falls for 106.1 days and collects up to 8.31" (211mm) of precipitation.Snowfall
Months with snowfall in Riverdale are January through April and December. In January, it is snowing for 3.3 days. Throughout January, 0.31" (8mm) of snow is accumulated. Throughout the year, there are 12.2 snowfall days, and 1.18" (30mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 38min.On the first day of January in Riverdale, sunrise is at 7:21 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:12 pm EST.
Sunshine
In Riverdale, the average sunshine in January 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 in Riverdale. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 2 during January translates into the following directions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Riverdale, NJ
- Average high temperature in January: 35.8°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 (35.8°F).
- Average low temperature in January: 25°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in January
Riverdale, NJ
- Average pressure in January: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Riverdale, NJ
- Average wind speed in January: 9mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in January
Riverdale, NJ
- Average humidity in January: 74%
The months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (69%).
Average rainfall in January
Riverdale, NJ
- Average rainfall in January: 0.51"
The wettest month (with the highest rainfall) is July (0.98").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in January
Riverdale, NJ
- Average rainfall days in January: 5.4 days
The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in January
Riverdale, NJ
- Average snowfall in January: 0.31"
The month with the highest snowfall is December (0.35").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in January
Riverdale, NJ
- Average snowfall days in January: 3.3 days
The months with the highest number of snowfall days are January and February (3.3 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
Riverdale, NJ
- Average daylight in January: 9h and 36min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 5h and 6min
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
Riverdale, NJ
- Average sunshine days in January: 22.5 days
The month with the most sunshine days is January (22.5 days).
The months with the least sunshine days are May and June (15.9 days).
Average UV index in January
Riverdale, 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
Riverdale, NJ
- Average cloud cover in January: 44
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Riverdale, 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).
