January weather forecastRiverview, DE
January
Weather in January
January, the same as December, is an icy winter month in Riverview, Delaware, with an average temperature fluctuating between 40.3°F (4.6°C) and 28.8°F (-1.8°C).Temperature
In Riverview, the lowest temperatures are generally noted in January, averaging a high of 40.3°F (4.6°C) and a low of 28.8°F (-1.8°C).Humidity
January, March, April and November, with an average relative humidity of 74%, are the least humid months.Rainfall
The month with the least rainfall is January, when the rain falls for 9.5 days and typically collects 2.13" (54mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. The month with the most snowfall is January, when snow falls for 4.3 days and typically aggregates up to 1.93" (49mm) of snow.Daylight
In January, the average length of the day is 9h and 48min.On the first day of January, sunrise is at 7:20 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:21 pm EST.
Sunshine
In Riverview, the average sunshine in January is 5.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In January, the maximum UV index of 2 transforms into these recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Riverview, DE
- Average high temperature in January: 40.3°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 (40.3°F).
- Average low temperature in January: 28.8°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in January
Riverview, DE
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Riverview, DE
- Average wind speed in January: 9.9mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in January
Riverview, DE
- Average humidity in January: 74%
The months with the highest relative humidity are May, August and September (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in January
Riverview, DE
- Average rainfall in January: 2.13"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in January
Riverview, DE
- Average rainfall days in January: 9.5 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9 days).
Average snowfall in January
Riverview, DE
- Average snowfall in January: 1.93"
The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Riverview, DE
- Average snowfall days in January: 4.3 days
The month with the highest number of snowfall days is January (4.3 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
Riverview, DE
- Average daylight in January: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 5h and 12min
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 54min).
Average sunshine days in January
Riverview, DE
- Average sunshine days in January: 17.7 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in January
Riverview, DE
- 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 and December (UV index 2).
Average cloud cover in January
Riverview, DE
- Average cloud cover in January: 44
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Riverview, DE
- 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).
