January weather forecastClayton, DE
January
Weather in January
The onset of the year in Clayton, Delaware brings with it a sense of chill, with the lowest average temperature sitting at 27.9°F (-2.3°C). Compared to the conditions that herald December, January sees a notable increase in its relative humidity. Despite the crisp air, there isn't an abundance of snowfall, as with the higher latitudes. It's a demonstrably cold month with relatively less daylight. Venturing outdoors may require robust wind protection considering the average wind speed peaks at 9.4mph (15.1km/h).Temperature
Clayton experiences its lowest temperatures in January, with an average peak of 39.2°F (4°C) and a low of 27.9°F (-2.3°C).Humidity
In Clayton, the average relative humidity in January is 74%.Rainfall
The month with the least rainfall is January, when the rain falls for 9.7 days and typically collects 2.13" (54mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Clayton, in January, snow falls for 4.5 days, with typically accumulated 2.09" (53mm) of snow. Throughout the year, there are 14.4 snowfall days, and 7.44" (189mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 47min.On the first day of the month, sunrise is at 7:22 am and sunset at 4:49 pm. On the last day of January, sunrise is at 7:10 am and sunset at 5:21 pm EST.
Sunshine
In Clayton, the average sunshine in January is 5.3h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 2 during January translates into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Enhance your sun protection with tightly woven, yet airy clothing. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Clayton, DE
- Average high temperature in January: 39.2°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (39.2°F).
- Average low temperature in January: 27.9°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in January
Clayton, 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
Clayton, DE
- Average wind speed in January: 9.4mph
The windiest months (with the highest average wind speed) are February and March (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Clayton, DE
- Average humidity in January: 74%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in January
Clayton, DE
- Average rainfall in January: 2.13"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in January
Clayton, DE
- Average rainfall days in January: 9.7 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in January
Clayton, DE
- Average snowfall in January: 2.09"
The month with the highest snowfall is March (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Clayton, DE
- Average snowfall days in January: 4.5 days
The month with the highest number of snowfall days is January (4.5 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
Clayton, 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 18min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in January
Clayton, DE
- Average sunshine days in January: 17.2 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in January
Clayton, 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
Clayton, DE
- Average cloud cover in January: 43
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in January
Clayton, 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).
