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 proves to be the coldest month, recording an average maximum temperature of 37°F (2.8°C) and a minimum temperature of 25.3°F (-3.7°C).Humidity
In Wilmington, the average relative humidity in January is 75%.Rainfall
January is the month with the least rainfall in Wilmington, Delaware. Rain falls for 9.3 days and accumulates 2.36" (60mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In January, in Wilmington, it is snowing for 6.8 days. Throughout January, 3.03" (77mm) of snow is accumulated. Throughout the year, in Wilmington, Delaware, there are 21.9 snowfall days, and 12.05" (306mm) of snow is accumulated.Ocean temperature
In Wilmington, in January, the average water temperature is 37.4°F (3°C).Note: When swimming, this is deemed life-endangering and extremely risky. The painful cold water instigates fast-paced hyperventilation. Wearing a specialized swimsuit is necessary to lessen thermal harm.
Daylight
The average length of the day in January is 9h and 44min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:48 pm. On the last day of January, sunrise is at 7:11 am and sunset at 5:20 pm EST.
Sunshine
In January, the average sunshine in Wilmington is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Wilmington. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 2 in January leads to these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Wilmington?
How cold is it in Wilmington in January?
What is the average humidity in January in Wilmington?
What is the driest month in Wilmington?
How many days does it rain in January in Wilmington?
How much does it snow in Wilmington in January?
What is the water temperature in January in Wilmington?
What is the average length of the day in January in Wilmington?
What time are sunrise and sunset in January in Wilmington?
How long on average sun shines in January in Wilmington?
When is the lowest UV index in Wilmington?
What is the UV index intensity in January in Wilmington?
Average temperature in January
Wilmington, DE
- Average high temperature in January: 37°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in January: 25.3°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in January
Wilmington, 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
Wilmington, DE
- Average wind speed in January: 8.6mph
The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in January
Wilmington, DE
- Average humidity in January: 75%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in January
Wilmington, DE
- Average rainfall in January: 2.36"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").
Average rainfall days in January
Wilmington, DE
- Average rainfall days in January: 9.3 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in January
Wilmington, DE
- Average snowfall in January: 3.03"
The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Wilmington, DE
- Average snowfall days in January: 6.8 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in January
Wilmington, DE
- Average sea temperature in January: 37°F
The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (34°F).
Average daylight in January /
Average sunshine in January
Wilmington, DE
- Average daylight in January: 9h and 4min
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 24min).
- Average sunshine in January: 5h and 0min
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
Wilmington, DE
- Average sunshine days in January: 16.8 days
The month with the most sunshine days is November (18.6 days).
The months with the least sunshine days are May and July (9.8 days).
Average UV index in January
Wilmington, 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, February, November and December (UV index 2).
Average cloud cover in January
Wilmington, DE
- Average cloud cover in January: 45
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in January
Wilmington, 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).
Wilmington, Delaware, USA
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