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, exhibiting average temperatures of 40.6°F (4.8°C) at the peak and 27.5°F (-2.5°C) at the base.Humidity
In January, the average relative humidity is 72%.Rainfall
January is the month with the least rainfall. Rain falls for 9.3 days and accumulates 1.57" (40mm) of precipitation.Snowfall
Months with snowfall are January through March and December. January is the month with the most snowfall. Snow falls for 3.8 days and accumulates 2.17" (55mm) of snow.Daylight
In January, the average length of the day in Marlow Heights is 9h and 49min.On the first day of January, sunrise is at 7:26 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:27 pm EST.
Sunshine
January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine.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 health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 2 during January translates into the following guidance:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
Is January cold?
What is the average humidity in January?
What is the driest month?
How much 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?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Marlow Heights have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Marlow Heights, MD
- Average high temperature in January: 40.6°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in January: 27.5°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in January
Marlow Heights, 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 (29.95"Hg).
Average wind speed in January
Marlow Heights, MD
- Average wind speed in January: 7.6mph
The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in January
Marlow Heights, MD
- Average humidity in January: 72%
The month with the highest relative humidity is May (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in January
Marlow Heights, MD
- Average rainfall in January: 1.57"
The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.57").
Average rainfall days in January
Marlow Heights, MD
- Average rainfall days in January: 9.3 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in January
Marlow Heights, MD
- Average snowfall in January: 2.17"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Marlow Heights, MD
- Average snowfall days in January: 3.8 days
The months with the highest number of snowfall days are January and February (3.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Marlow Heights, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in January
Marlow Heights, MD
- Average sunshine days in January: 18.2 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in January
Marlow Heights, MD
- Average UV index in January: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in January
Marlow Heights, MD
- 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 30).
Average visibility in January
Marlow Heights, MD
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Marlow Heights, Maryland, USA
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