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 brings the lowest temperatures, with an average high of 39.9°F (4.4°C) and an average low of 28.8°F (-1.8°C).Humidity
In January, the average relative humidity is 74%.Rainfall
The month with the least rainfall is January, when the rain falls for 8.3 days and typically collects 1.73" (44mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. January is the month with the most snowfall. Snow falls for 3.3 days and accumulates 1.65" (42mm) of snow.Daylight
In Willoughby, the average length of the day in January is 9h and 49min.On the first day of the month, sunrise is at 7:22 am and sunset at 4:52 pm. On the last day of January, sunrise is at 7:11 am and sunset at 5:23 pm EST.
Sunshine
The average sunshine in January is 5.2h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 2 in January interprets into the following advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold does it get in January?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
When does it snow the most?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How many hours of sunshine does Willoughby have in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Willoughby, MD
- Average high temperature in January: 39.9°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 (39.9°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
Willoughby, MD
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Willoughby, MD
- Average wind speed in January: 9.6mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Willoughby, MD
- Average humidity in January: 74%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are April and November (73%).
Average rainfall in January
Willoughby, MD
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in January
Willoughby, MD
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in January
Willoughby, MD
- Average snowfall in January: 1.65"
The month with the highest snowfall is January (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Willoughby, MD
- Average snowfall days in January: 3.3 days
The month with the highest number of snowfall days is January (3.3 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
Willoughby, MD
- 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 1min
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 0min).
Average sunshine days in January
Willoughby, MD
- Average sunshine days in January: 19.6 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in January
Willoughby, MD
- 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 and December (UV index 2).
Average cloud cover in January
Willoughby, MD
- Average cloud cover in January: 44
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Willoughby, MD
- 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).
Willoughby, Maryland, USA
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