January weather forecast
Green Wood Knolls, MD

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Weather in January

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

Temperature

January is the month when Green Wood Knolls sees the lowest average temperatures, with a high of 39°F (3.9°C) and a low of 26.2°F (-3.2°C).

Humidity

In January, the average relative humidity in Green Wood Knolls, Maryland, 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

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

Daylight

The average length of the day in January is 9h and 47min.
On the first day of January in Green Wood Knolls, Maryland, 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.

Sunshine

The average sunshine in January in Green Wood Knolls is 5.1h.

UV index

The months with the lowest UV index in Green Wood Knolls, Maryland, are January, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 2 during January translates into these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What month is the coldest in Green Wood Knolls?

In Green Wood Knolls, January is the coldest month, with temperatures averaging a high of 39°F (3.9°C) and a low of 26.2°F (-3.2°C).

How cold is it in Green Wood Knolls in January?

The high-temperature, in January, in Green Wood Knolls, records 39°F (3.9°C), while the low-temperature is 26.2°F (-3.2°C).

What is the average humidity in January in Green Wood Knolls?

In January, the average relative humidity is 73%.

What is the driest month in Green Wood Knolls?

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

How much does it rain in Green Wood Knolls in January?

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

When does it snow the most in Green Wood Knolls?

The months with the most snowfall in Green Wood Knolls, Maryland, 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 Green Wood Knolls, in January, snow falls for 5.1 days, with typically accumulated 3.03" (77mm) of snow.

How many hours of daylight does Green Wood Knolls have in January?

In Green Wood Knolls, the average day length in January is 9h and 47min.

What time are sunrise and sunset in January in Green Wood Knolls?

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, in Green Wood Knolls, Maryland, sunrise is at 7:15 am and sunset at 5:27 pm EST.

How long on average sun shines in January in Green Wood Knolls?

The average sunshine duration in January in Green Wood Knolls is 5.1h.

When is the lowest UV index in Green Wood Knolls?

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

What is the UV index intensity in January in Green Wood Knolls?

In Green Wood Knolls, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
45.3°F 7.4°C
39°F 3.9°C
43.9°F 6.6°C
Average low temperature
32.9°F 0.5°C
26.2°F -3.2°C
28.8°F -1.8°C
Average pressure
30.11" 765mmHg
30.11" 765mmHg
30.07" 764mmHg
Average wind speed
7.1mph 11.4km/h
7.8mph 12.6km/h
7.9mph 12.7km/h
Average max. wind speed
7.8mph 12.6km/h
8.5mph 13.7km/h
8.5mph 13.7km/h
Average wind speed gusts
11.4mph 18.3km/h
12.3mph 19.8km/h
12.6mph 20.3km/h
Average humidity
76%
73%
75%
Average rainfall
2.76" 70mm
2.17" 55mm
2.2" 56mm
Average rainfall days
10.2
9.3
9.5
Average snowfall
1.38" 35mm
3.03" 77mm
2.32" 59mm
Average snowfall days
2.9
5.1
5.1
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
5h 1min
5h 1min
5h 0min
Average sunshine days
17.5
18.1
14.6
Average UV index
2
2
3
Average cloud cover
45%
45%
45%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Green Wood Knolls, Maryland, USA

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