January weather forecast
Long Green, MD

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Weather in January

January, the same as December, is another cold winter month in Long Green, Maryland, with an average temperature fluctuating between 25.9°F (-3.4°C) and 37.9°F (3.3°C).

Temperature

January is the coldest month, with the temperature often reaching an average high of 37.9°F (3.3°C) and an average low of 25.9°F (-3.4°C).

Humidity

The average relative humidity in January is 74%.

Rainfall

The month with the least rainfall is January, when the rain falls for 5.2 days and typically collects 0.47" (12mm) of precipitation.

Snowfall

Months with snowfall in Long Green are January through April, November and December. January is the month with the most snowfall. Snow falls for 3.1 days and accumulates 0.55" (14mm) of snow.

Daylight

The average length of the day in January in Long Green is 9h and 46min.
On the first day of January in Long Green, sunrise is at 7:26 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:24 pm EST.

Sunshine

The average sunshine in January is 5.1h.

UV index

The months with the lowest UV index in Long Green are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during January leads to these advisories:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the coldest time of year in Long Green?

Long Green's temperature records reveal January as the coldest month, marked by average highs of 37.9°F (3.3°C) and lows of 25.9°F (-3.4°C).

How cold does it get in Long Green in January?

An average high-temperature, in January, in Long Green, is 37.9°F (3.3°C) and the average low-temperature is 25.9°F (-3.4°C).

What is the average humidity in January in Long Green?

In January, the average relative humidity in Long Green is 74%.

What is the driest month in Long Green?

January is the month with the least rainfall. Rain falls for 5.2 days and accumulates 0.47" (12mm) of precipitation.

How many days does it rain in January in Long Green?

In January, in Long Green, the rain falls for 5.2 days. Throughout January, 0.47" (12mm) of precipitation is accumulated.

What is the snowiest month in Long Green?

January is the month with the most snowfall in Long Green. Snow falls for 3.1 days and accumulates 0.55" (14mm) of snow.

How much does it snow in Long Green in January?

In January, in Long Green, it is snowing for 3.1 days. Throughout January, 0.55" (14mm) of snow is accumulated.

How many hours of daylight does Long Green have in January?

The average day length in January in Long Green, Maryland, is 9h and 46min.

When are sunrise and sunset in January in Long Green?

In January, on the first day of the month, sunrise is at 7:26 am and sunset at 4:52 pm. On the last day of the month, in Long Green, Maryland, sunrise is at 7:14 am and sunset at 5:24 pm EST.

How long on average sun shines in January in Long Green?

The average sunshine duration in January in Long Green, Maryland, is 5.1h.

What are the months with the lowest UV index in Long Green?

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

How high is the UV index in January in Long Green?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
43.9°F 6.6°C
37.9°F 3.3°C
41.4°F 5.2°C
Average low temperature
33.1°F 0.6°C
25.9°F -3.4°C
28.2°F -2.1°C
Average pressure
30.11" 765mmHg
30.1" 765mmHg
30.07" 764mmHg
Average wind speed
8.3mph 13.4km/h
8.9mph 14.3km/h
8.9mph 14.3km/h
Average max. wind speed
8.9mph 14.3km/h
9.7mph 15.6km/h
9.7mph 15.6km/h
Average wind speed gusts
13.5mph 21.7km/h
14.5mph 23.3km/h
14.7mph 23.7km/h
Average humidity
77%
74%
76%
Average rainfall
0.75" 19mm
0.47" 12mm
0.51" 13mm
Average rainfall days
7
5.2
6
Average snowfall
0.24" 6mm
0.55" 14mm
0.35" 9mm
Average snowfall days
2
3.1
3.8
Average daylight
9h 2min
9h 5min
10h 4min
Average sunshine
5h 0min
5h 1min
4h 5min
Average sunshine days
21.9
22.6
18.7
Average UV index
2
2
2
Average cloud cover
45%
44%
46%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Long Green, MD

Average temperature in January - Long Green, MD
  • Average high temperature in January: 37.9°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in January: 25.9°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

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Average pressure in January
Long Green, MD

Average pressure in January - Long Green, MD
  • Average pressure in January: 30.1"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).

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Average wind speed in January
Long Green, MD

Average wind speed in January - Long Green, MD
  • Average wind speed in January: 8.9mph

The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in January
Long Green, MD

Average humidity in January - Long Green, MD
  • Average humidity in January: 74%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in January
Long Green, MD

Average rainfall in January - Long Green, MD
  • Average rainfall in January: 0.47"

The wettest month (with the highest rainfall) is August (1.46").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in January
Long Green, MD

Average rainfall days in January - Long Green, MD
  • Average rainfall days in January: 5.2 days

The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is January (5.2 days).

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Average snowfall in January
Long Green, MD

Average snowfall in January - Long Green, MD
  • Average snowfall in January: 0.55"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Long Green, MD

Average snowfall days in January - Long Green, MD
  • Average snowfall days in January: 3.1 days

The month with the highest number of snowfall days is February (3.8 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
Long Green, MD

Average daylight in January / Average sunshine in January - Long Green, 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 24min).

  • 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: 4h and 54min).

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Average sunshine days in January
Long Green, MD

Average sunshine days in January - Long Green, MD
  • Average sunshine days in January: 22.6 days

The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is July (15.2 days).

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Average UV index in January
Long Green, MD

Average UV index in January - Long Green, 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, November and December (UV index 2).

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Average cloud cover in January
Long Green, MD

Average cloud cover in January - Long Green, MD
  • Average cloud cover in January: 44

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in January
Long Green, MD

Average visibility in January - Long Green, 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).

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Long Green, Maryland, USA

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