January weather forecast
Bethesda, MD

Weather in January

January, like December, in Bethesda, Maryland, is a wintry winter month, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 27°F (-2.8°C).

Temperature

The coldest month is January, with an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 27°F (-2.8°C).

Humidity

In January, the average relative humidity is 72%.

Rainfall

The month with the least rainfall is January, when the rain falls for 8.7 days and typically collects 1.69" (43mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Bethesda. The month with the most snowfall in Bethesda, Maryland, is January, when snow falls for 4.3 days and typically aggregates up to 2.6" (66mm) of snow.

Daylight

In January, the average length of the day is 9h and 48min.
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 5:28 pm EST.

Sunshine

The months with the least sunshine are January, February and December, with an average of 5h of sunshine.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Bethesda?

With an average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 27°F (-2.8°C), January is the coldest month.

What is the temperature in January in Bethesda?

The average high-temperature, in January, in Bethesda, is 39.9°F (4.4°C), while the average low-temperature is 27°F (-2.8°C).

What is the average humidity in January in Bethesda?

The average relative humidity in January is 72%.

What is the driest month in Bethesda?

January is the month with the least rainfall in Bethesda. Rain falls for 8.7 days and accumulates 1.69" (43mm) of precipitation.

How many days does it rain in January in Bethesda?

In January, in Bethesda, the rain falls for 8.7 days. Throughout January, 1.69" (43mm) of precipitation is accumulated.

When does it snow the most in Bethesda?

The month with the most snowfall in Bethesda, Maryland, is January, when snow falls for 4.3 days and typically aggregates up to 2.6" (66mm) of snow.

How much does it snow in Bethesda in January?

In January, in Bethesda, Maryland, it is snowing for 4.3 days. Throughout January, 2.6" (66mm) of snow is accumulated.

How many hours of daylight does Bethesda have in January?

In Bethesda, Maryland, the average day length in January is 9h and 48min.

What time are sunrise and sunset in January in Bethesda?

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 Bethesda, sunrise is at 7:15 am and sunset at 5:28 pm EST.

What are the months with the least sunshine in Bethesda?

The months with the least sunshine are January, February and December, with an average of 5h of sunshine.

How many hours of sunshine does Bethesda have in January?

In January, the average sunshine duration in Bethesda is 5h.

What are the months with the lowest UV index in Bethesda?

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

What is the UV index intensity in January in Bethesda?

In Bethesda, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Bethesda, MD

Average temperature in January - Bethesda, MD
  • Average high temperature in January: 39.9°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in January: 27°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27°F).

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Average pressure in January
Bethesda, MD

Average pressure in January - Bethesda, 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
Bethesda, MD

Average wind speed in January - Bethesda, MD
  • Average wind speed in January: 7.6mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in January
Bethesda, MD

Average humidity in January - Bethesda, MD
  • Average humidity in January: 72%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in January
Bethesda, MD

Average rainfall in January - Bethesda, MD
  • Average rainfall in January: 1.69"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.69").

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Average rainfall days in January
Bethesda, MD

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

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in January
Bethesda, MD

Average snowfall in January - Bethesda, MD
  • Average snowfall in January: 2.6"

The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Bethesda, MD

Average snowfall days in January - Bethesda, MD
  • Average snowfall days in January: 4.3 days

The month with the highest number of snowfall days is February (4.4 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
Bethesda, MD

Average daylight in January / Average sunshine in January - Bethesda, MD
  • Average daylight in January: 9h and 48min

The month with the longest days is June (Average daylight: 14h and 52min).
The month with the shortest days is December (Average daylight: 9h and 29min).

  • Average sunshine in January: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 0min).

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Average sunshine days in January
Bethesda, MD

Average sunshine days in January - Bethesda, MD
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is November (20.4 days).
The months with the least sunshine days are May and July (12.3 days).

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Average UV index in January
Bethesda, MD

Average UV index in January - Bethesda, 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
Bethesda, MD

Average cloud cover in January - Bethesda, 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
Bethesda, MD

Average visibility in January - Bethesda, 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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