January weather forecast
Green Wood Knolls, MD

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Weather in January

January, the same as December, is another cold winter month in Green Wood Knolls, Maryland, with an average temperature varying between 39°F (3.9°C) and 26.2°F (-3.2°C).

Temperature

January, with average temperatures reaching a high of 39°F (3.9°C) and a low of 26.2°F (-3.2°C), is the coldest month.

Humidity

In Green Wood Knolls, the average relative humidity in January is 73%.

Rainfall

The month with the least rainfall is January, when the rain falls for 9.3 days and typically collects 2.17" (55mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. The months with the most snowfall are January and March, with an average 3.03" (77mm) of accumulated snow.

Daylight

In January, the average length of the day is 9h and 47min.
On the first day of the month, sunrise is at 7:27 am and sunset at 4:56 pm. On the last day of January, sunrise is at 7:15 am and sunset at 5:27 pm EST.

Sunshine

In January, the average sunshine is 5.1h.

UV index

January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Green Wood Knolls. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: An average maximum UV index of 2 in January leads to these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.

Frequently asked questions

What month is the coldest?

Temperature readings reach their annual highs in January, averaging 39°F (3.9°C) and a minimum average of 26.2°F (-3.2°C).

How cold does it get in January?

The average high-temperature and low-temperature during January are 39°F (3.9°C) and 26.2°F (-3.2°C) respectively.

What is the average humidity in January?

In January, the average relative humidity is 73%.

What is the driest month in Green Wood Knolls?

January is the month with the least rainfall. Rain falls for 9.3 days and accumulates 2.17" (55mm) of precipitation.

How many days does it rain in January?

In January, in Green Wood Knolls, the rain falls for 9.3 days. Throughout January, 2.17" (55mm) of precipitation is accumulated.

What is the snowiest month?

The months with the most snowfall are January and March, with an average 3.03" (77mm) of accumulated snow.

How many days does it snow in January?

In Green Wood Knolls, in January, during 5.1 snowfall days, 3.03" (77mm) of snow is typically accumulated.

What is the average length of the day in January?

The average day length in January is 9h and 47min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:27 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:27 pm EST.

How long on average sun shines in January?

In January, the average sunshine duration is 5.1h.

What is the month with the lowest UV index?

January, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in January?

The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Green Wood Knolls, MD

Average temperature in January - Green Wood Knolls, MD
  • Average high temperature in January: 39°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in January: 26.2°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in January
Green Wood Knolls, MD

Average pressure in January - Green Wood Knolls, 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
Green Wood Knolls, MD

Average wind speed in January - Green Wood Knolls, MD
  • Average wind speed in January: 7.8mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in January
Green Wood Knolls, MD

Average humidity in January - Green Wood Knolls, MD
  • Average humidity in January: 73%

The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).

Average rainfall in January
Green Wood Knolls, MD

Average rainfall in January - Green Wood Knolls, MD
  • Average rainfall in January: 2.17"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.17").

Average rainfall days in January
Green Wood Knolls, MD

Average rainfall days in January - Green Wood Knolls, MD
  • Average rainfall days in January: 9.3 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in January
Green Wood Knolls, MD

Average snowfall in January - Green Wood Knolls, MD
  • Average snowfall in January: 3.03"

The months with the highest snowfall are January and March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Green Wood Knolls, MD

Average snowfall days in January - Green Wood Knolls, MD
  • Average snowfall days in January: 5.1 days

The months with the highest number of snowfall days are January and February (5.1 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
Green Wood Knolls, MD

Average daylight in January / Average sunshine in January - Green Wood Knolls, 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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in January
Green Wood Knolls, MD

Average sunshine days in January - Green Wood Knolls, MD
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is November (19.4 days).
The months with the least sunshine days are May and July (11 days).

Average UV index in January
Green Wood Knolls, MD

Average UV index in January - Green Wood Knolls, 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
Green Wood Knolls, MD

Average cloud cover in January - Green Wood Knolls, MD
  • Average cloud cover in January: 45

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in January
Green Wood Knolls, MD

Average visibility in January - Green Wood Knolls, 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).

Green Wood Knolls, Maryland, USA

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