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
In Dover, January records the lowest average temperatures, peaking at 34.3°F (1.3°C) and reaching a low of 20.8°F (-6.2°C).Humidity
In Dover, the average relative humidity in January is 78%.Rainfall
In Dover, in January, it is raining for 4.2 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, in Dover, there are 81.9 rainfall days, and 6.69" (170mm) of precipitation is accumulated.Snowfall
Months with snowfall in Dover are January through May, October through December. In Dover, in January, during 4.5 snowfall days, 0.51" (13mm) of snow is typically accumulated. In Dover, New Jersey, during the entire year, snow falls for 18.1 days and aggregates up to 2.68" (68mm) of snow.Daylight
In January, the average length of the day in Dover, New Jersey, is 9h and 38min.On the first day of January in Dover, sunrise is at 7:22 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:13 pm EST.
Sunshine
In Dover, the average sunshine in January is 4.8h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Dover?
How cold is January in Dover?
What is the average humidity in January in Dover?
How many days does it rain in January in Dover?
How many days does it snow in January in Dover?
What is the average length of the day in January in Dover?
What time are sunrise and sunset in January in Dover?
How long on average sun shines in January in Dover?
What are the months with the lowest UV index in Dover?
How high is the UV index in January in Dover?
Average temperature in January
Dover, NJ
- Average high temperature in January: 34.3°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in January: 20.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in January
Dover, NJ
- Average pressure in January: 30.07"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Dover, NJ
- Average wind speed in January: 8.1mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in January
Dover, NJ
- Average humidity in January: 78%
The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (75%).
Average rainfall in January
Dover, NJ
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is July (0.79").
The driest month (with the least rainfall) is September (0.16").
Average rainfall days in January
Dover, NJ
- Average rainfall days in January: 4.2 days
The month with the highest number of rainy days is July (9.5 days).
The month with the least rainy days is February (4 days).
Average snowfall in January
Dover, NJ
- Average snowfall in January: 0.51"
The month with the highest snowfall is March (0.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Dover, NJ
- Average snowfall days in January: 4.5 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Dover, NJ
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in January
Dover, NJ
- Average sunshine days in January: 24.3 days
The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (18.3 days).
Average UV index in January
Dover, NJ
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Dover, NJ
- Average cloud cover in January: 48
The months with the most cloud cover are February and March (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in January
Dover, NJ
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
Dover, New Jersey, USA
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