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
Upper Marlboro reaches its lowest average temperatures in January, measuring 40.1°F (4.5°C) at the peak and 28.2°F (-2.1°C) at the lowest.Humidity
January, March and April, with an average relative humidity of 72%, are the least humid months.Rainfall
The month with the least rainfall is January, when the rain falls for 9.4 days and typically collects 2.05" (52mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. January is the month with the most snowfall. Snow falls for 4.6 days and accumulates 2.76" (70mm) of snow.Daylight
The average length of the day in January is 9h and 49min.On the first day of January in Upper Marlboro, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:26 pm EST.
Sunshine
The average sunshine in January is 5.3h.UV index
The months with the lowest UV index in Upper Marlboro are January, November 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:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
Is January cold?
What are the least humid months?
What is the average humidity in January?
What is the driest month?
How much does it rain in Upper Marlboro in January?
What is the snowiest month?
How many days does it snow in January?
How many hours of daylight does Upper Marlboro have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Upper Marlboro have in January?
What are the months with the lowest UV index?
What is the UV index reading in January in Upper Marlboro?
Average temperature in January
Upper Marlboro, MD
- Average high temperature in January: 40.1°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in January: 28.2°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in January
Upper Marlboro, MD
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in January
Upper Marlboro, MD
- Average wind speed in January: 8.3mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).
Average humidity in January
Upper Marlboro, MD
- Average humidity in January: 72%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are January, March and April (72%).
Average rainfall in January
Upper Marlboro, MD
- Average rainfall in January: 2.05"
The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in January
Upper Marlboro, MD
- Average rainfall days in January: 9.4 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in January
Upper Marlboro, MD
- Average snowfall in January: 2.76"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Upper Marlboro, MD
- Average snowfall days in January: 4.6 days
The month with the highest number of snowfall days is January (4.6 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
Upper Marlboro, MD
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
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: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in January
Upper Marlboro, MD
- Average sunshine days in January: 18.1 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in January
Upper Marlboro, 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, November and December (UV index 2).
Average cloud cover in January
Upper Marlboro, MD
- Average cloud cover in January: 42
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in January
Upper Marlboro, 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).
Upper Marlboro, Maryland, USA
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