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
January is the coldest month of the year, registering average temperatures as high as 39.7°F (4.3°C) and as low as 28.8°F (-1.8°C).Humidity
The months with the lowest humidity are January, March, April and November, with an average relative humidity of 74%.Rainfall
January is the month with the least rainfall. Rain falls for 8.2 days and accumulates 1.46" (37mm) of precipitation.Snowfall
January through March and December are months with snowfall. January is the month with the most snowfall. Snow falls for 3.5 days and accumulates 1.65" (42mm) of snow.Daylight
The average length of the day in January is 9h and 47min.On the first day of January, sunrise is at 7:21 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:21 pm EST.
Sunshine
In January, the average sunshine is 5.3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
Is January cold in Dover?
What is the least humid month?
What is the average humidity in January?
What is the driest month in Dover?
How much does it rain in January?
When does it snow the most?
How much does it snow in January?
How many hours of daylight does Dover have in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Dover, DE
- Average high temperature in January: 39.7°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 (39.7°F).
- Average low temperature in January: 28.8°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in January
Dover, 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
Dover, 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 (6.4mph).
Average humidity in January
Dover, DE
- Average humidity in January: 74%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in January
Dover, DE
- Average rainfall in January: 1.46"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in January
Dover, DE
- Average rainfall days in January: 8.2 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in January
Dover, DE
- Average snowfall in January: 1.65"
The month with the highest snowfall is January (1.65").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Dover, DE
- Average snowfall days in January: 3.5 days
The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Dover, 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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in January
Dover, DE
- Average sunshine days in January: 19.3 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in January
Dover, 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
Dover, DE
- Average cloud cover in January: 43
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in January
Dover, 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).
Dover, Delaware, USA
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