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
The month of January, characterized by an average high of 39.2°F (4°C) and a low of 27.9°F (-2.3°C), is recognized as the coldest.Humidity
In January, the average relative humidity in Clayton, Delaware, is 74%.Rainfall
The month with the least rainfall in Clayton is January, when the rain falls for 9.7 days and typically collects 2.13" (54mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Clayton, Delaware. In January, it is snowing for 4.5 days. Throughout January, 2.09" (53mm) of snow is accumulated. Throughout the year, there are 14.4 snowfall days, and 7.44" (189mm) of snow is accumulated.Daylight
The average length of the day in January in Clayton, Delaware, 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, in Clayton, sunrise is at 7:10 am and sunset at 5:21 pm EST.
Sunshine
In Clayton, Delaware, the average sunshine in January is 5.3h.UV index
The months with the lowest UV index in Clayton are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 2 in January translates into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What are the coldest months in Clayton?
How cold does it get in Clayton in January?
What is the average humidity in January in Clayton?
What is the driest month in Clayton?
How much does it rain in Clayton in January?
How many days does it snow in January in Clayton?
How many hours of daylight does Clayton have in January?
When is the sunrise / sunset in January in Clayton?
How long on average sun shines in January in Clayton?
When is the lowest UV index in Clayton?
What is the UV index intensity in January in Clayton?
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 5min
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 2min
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).
Clayton, Delaware, USA
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