January weather forecast
Gaithersburg, MD

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Weather in January

With its icy and raw conditions, Gaithersburg, Maryland's January weather offers a characteristic winterscape. Despite being the second coldest month of the year, January sees temperatures ranging from 25.2°F (-3.8°C) to 38.8°F (3.8°C). Snowfall is at its second-highest, rendering mesmerizing white canvas across the city. The month witnesses the least amount of daylight, making indoor activities preferable. The icy winds flowing add an extra chill factor to the already frosty scenario.

Temperature

January, with an average high of 38.8°F (3.8°C) and a low of 25.2°F (-3.8°C), signifies the coldest month of the year in Gaithersburg.

Humidity

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

Rainfall

January is the month with the least rainfall in Gaithersburg, Maryland. Rain falls for 8.7 days and accumulates 1.73" (44mm) of precipitation.

Snowfall

Months with snowfall in Gaithersburg are January through May, November and December. The month with the most snowfall is January, when snow falls for 4.8 days and typically aggregates up to 2.76" (70mm) of snow.

Daylight

In Gaithersburg, the average length of the day in January is 9h and 47min.
On the first day of the month, sunrise is at 7:28 am and sunset at 4:56 pm. On the last day of January, in Gaithersburg, sunrise is at 7:16 am and sunset at 5:27 pm EST.

Sunshine

The months with the least sunshine are January, February and December, with an average of 5.1h of sunshine.

UV index

The months with the lowest UV index in Gaithersburg are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.
Note: A maximum high daily UV index of 2 during January translates into the following directions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What month is the coldest in Gaithersburg?

In Gaithersburg, Maryland, the average lowest temperatures are observed in January, with a high of 38.8°F (3.8°C) and a low of 25.2°F (-3.8°C).

How cold does it get in Gaithersburg in January?

Gaithersburg in January has an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 25.2°F (-3.8°C).

What is the average humidity in January in Gaithersburg?

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

What is the driest month in Gaithersburg?

January is the month with the least rainfall in Gaithersburg, Maryland. Rain falls for 8.7 days and accumulates 1.73" (44mm) of precipitation.

How many days does it rain in January in Gaithersburg?

In Gaithersburg, in January, it is raining for 8.7 days, with typically 1.73" (44mm) of accumulated precipitation.

When does it snow the most in Gaithersburg?

The month with the most snowfall in Gaithersburg is January, when snow falls for 4.8 days and typically aggregates up to 2.76" (70mm) of snow.

How many days does it snow in January in Gaithersburg?

In Gaithersburg, in January, during 4.8 snowfall days, 2.76" (70mm) of snow is typically accumulated.

How many hours of daylight does Gaithersburg have in January?

In Gaithersburg, Maryland, the average day length in January is 9h and 47min.

When are sunrise and sunset in January in Gaithersburg?

On the first day of January in Gaithersburg, Maryland, sunrise is at 7:28 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:27 pm EST.

What are the months with the least sunshine in Gaithersburg?

The months with the least sunshine are January, February and December, with an average of 5.1h of sunshine.

How long on average sun shines in January in Gaithersburg?

In January, the average sunshine duration is 5.1h.

What is the month with the lowest UV index in Gaithersburg?

January, February, November 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 Gaithersburg?

In Gaithersburg, Maryland, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
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
Gaithersburg, MD

Average temperature in January - Gaithersburg, MD
  • Average high temperature in January: 38.8°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in January: 25.2°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in January
Gaithersburg, MD

Average pressure in January - Gaithersburg, 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
Gaithersburg, MD

Average wind speed in January - Gaithersburg, MD
  • Average wind speed in January: 7.7mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in January
Gaithersburg, MD

Average humidity in January - Gaithersburg, MD
  • Average humidity in January: 74%

The months with the highest relative humidity are May, October and December (77%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in January
Gaithersburg, MD

Average rainfall in January - Gaithersburg, MD
  • Average rainfall in January: 1.73"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.73").

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Average rainfall days in January
Gaithersburg, MD

Average rainfall days in January - Gaithersburg, MD
  • Average rainfall days in January: 8.7 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (8.7 days).

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Average snowfall in January
Gaithersburg, MD

Average snowfall in January - Gaithersburg, MD
  • Average snowfall in January: 2.76"

The month with the highest snowfall is January (2.76").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Gaithersburg, MD

Average snowfall days in January - Gaithersburg, MD
  • Average snowfall days in January: 4.8 days

The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
Gaithersburg, MD

Average daylight in January / Average sunshine in January - Gaithersburg, 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 months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).

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Average sunshine days in January
Gaithersburg, MD

Average sunshine days in January - Gaithersburg, MD
  • Average sunshine days in January: 18 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.5 days).

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Average UV index in January
Gaithersburg, MD

Average UV index in January - Gaithersburg, 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
Gaithersburg, MD

Average cloud cover in January - Gaithersburg, MD
  • Average cloud cover in January: 44

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in January
Gaithersburg, MD

Average visibility in January - Gaithersburg, 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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Gaithersburg, Maryland, USA

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