January weather forecast
Glenn Dale, MD

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Weather in January

January, like December, in Glenn Dale, Maryland, is another cold winter month, with an average temperature ranging between min 28°F (-2.2°C) and max 39.7°F (4.3°C).

Temperature

Temperature records mark January as the coldest month, with highs averaging 39.7°F (4.3°C) and lows at 28°F (-2.2°C).

Humidity

The average relative humidity in January in Glenn Dale is 72%.

Rainfall

The month with the least rainfall in Glenn Dale is January, when the rain falls for 8.9 days and typically collects 2.05" (52mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Glenn Dale, Maryland. January is the month with the most snowfall. Snow falls for 4.3 days and accumulates 2.36" (60mm) of snow.

Daylight

In Glenn Dale, the average length of the day in January is 9h and 48min.
On the first day of January in Glenn Dale, sunrise is at 7:26 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:26 pm EST.

Sunshine

In January, the average sunshine in Glenn Dale is 5.2h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high daily UV index of 2 during January translates into the following directions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What part of the year is the coldest in Glenn Dale?

January is the month when Glenn Dale, Maryland, sees the average lowest temperatures, with a high of 39.7°F (4.3°C) and a low of 28°F (-2.2°C).

Is January cold in Glenn Dale?

The high-temperature, in January, in Glenn Dale, records 39.7°F (4.3°C), while the low-temperature is 28°F (-2.2°C).

What is the average humidity in January in Glenn Dale?

The average relative humidity in January in Glenn Dale is 72%.

What is the driest month in Glenn Dale?

January is the month with the least rainfall. Rain falls for 8.9 days and accumulates 2.05" (52mm) of precipitation.

How much does it rain in Glenn Dale in January?

In January, in Glenn Dale, Maryland, the rain falls for 8.9 days. Throughout January, 2.05" (52mm) of precipitation is accumulated.

What is the snowiest month in Glenn Dale?

January is the month with the most snowfall. Snow falls for 4.3 days and accumulates 2.36" (60mm) of snow.

How many days does it snow in January in Glenn Dale?

In January, in Glenn Dale, it is snowing for 4.3 days. Throughout January, 2.36" (60mm) of snow is accumulated.

What is the average length of the day in January in Glenn Dale?

In January, the average day length in Glenn Dale is 9h and 48min.

When is the sunrise / sunset in January in Glenn Dale?

On the first day of January, sunrise is at 7:26 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:26 pm EST.

How long on average sun shines in January in Glenn Dale?

In January, the average sunshine duration in Glenn Dale is 5.2h.

What are the months with the lowest UV index in Glenn Dale?

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

How high is the UV index in January in Glenn Dale?

In Glenn Dale, Maryland, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
45.5°F 7.5°C
39.7°F 4.3°C
43.5°F 6.4°C
Average low temperature
34.5°F 1.4°C
28°F -2.2°C
30.4°F -0.9°C
Average pressure
30.11" 765mmHg
30.1" 765mmHg
30.07" 764mmHg
Average wind speed
7.8mph 12.6km/h
8.5mph 13.7km/h
8.6mph 13.8km/h
Average max. wind speed
8.5mph 13.7km/h
9.2mph 14.8km/h
9.2mph 14.8km/h
Average wind speed gusts
12.9mph 20.8km/h
13.8mph 22.2km/h
14.1mph 22.7km/h
Average humidity
76%
72%
74%
Average rainfall
2.68" 68mm
2.05" 52mm
2.13" 54mm
Average rainfall days
9.8
8.9
9.7
Average snowfall
0.63" 16mm
2.36" 60mm
1.93" 49mm
Average snowfall days
2.4
4.3
3.8
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
5h 1min
5h 1min
5h 0min
Average sunshine days
18.2
18.5
15.8
Average UV index
2
2
3
Average cloud cover
45%
43%
45%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Glenn Dale, MD

Average temperature in January - Glenn Dale, MD
  • Average high temperature in January: 39.7°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in January: 28°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°F).

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Average pressure in January
Glenn Dale, MD

Average pressure in January - Glenn Dale, 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
Glenn Dale, MD

Average wind speed in January - Glenn Dale, MD
  • Average wind speed in January: 8.5mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

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Average humidity in January
Glenn Dale, MD

Average humidity in January - Glenn Dale, MD
  • Average humidity in January: 72%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in January
Glenn Dale, MD

Average rainfall in January - Glenn Dale, MD
  • Average rainfall in January: 2.05"

The wettest month (with the highest rainfall) is August (3.62").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in January
Glenn Dale, MD

Average rainfall days in January - Glenn Dale, MD
  • Average rainfall days in January: 8.9 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.9 days).

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Average snowfall in January
Glenn Dale, MD

Average snowfall in January - Glenn Dale, MD
  • Average snowfall in January: 2.36"

The month with the highest snowfall is January (2.36").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Glenn Dale, MD

Average snowfall days in January - Glenn Dale, MD
  • Average snowfall days in January: 4.3 days

The month with the highest number of snowfall days is January (4.3 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
Glenn Dale, MD

Average daylight in January / Average sunshine in January - Glenn Dale, 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in January
Glenn Dale, MD

Average sunshine days in January - Glenn Dale, MD
  • Average sunshine days in January: 18.5 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in January
Glenn Dale, MD

Average UV index in January - Glenn Dale, 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 and December (UV index 2).

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Average cloud cover in January
Glenn Dale, MD

Average cloud cover in January - Glenn Dale, 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 29).

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Average visibility in January
Glenn Dale, MD

Average visibility in January - Glenn Dale, 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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Glenn Dale, Maryland, USA

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