January weather forecast
Mount Aetna, MD

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Weather in January

January, the same as December, is a wintry winter month in Mount Aetna, Maryland, with an average temperature ranging between max 37°F (2.8°C) and min 23.4°F (-4.8°C).

Temperature

Mount Aetna reaches its lowest average temperatures in January, measuring 37°F (2.8°C) at the peak and 23.4°F (-4.8°C) at the lowest.

Humidity

In Mount Aetna, the average relative humidity in January is 75%.

Rainfall

The month with the least rainfall is January, when the rain falls for 9.6 days and typically collects 1.97" (50mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. January is the month with the most snowfall. Snow falls for 7.8 days and accumulates 4.72" (120mm) of snow.

Daylight

In January, the average length of the day in Mount Aetna is 9h and 45min.
On the first day of the month, sunrise is at 7:31 am and sunset at 4:56 pm. On the last day of January, in Mount Aetna, sunrise is at 7:19 am and sunset at 5:28 pm EST.

Sunshine

The average sunshine in January is 4.8h.

UV index

The months with the lowest UV index 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 unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 2 during January, leads to the following recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

January, on average, is the coldest month, registering a high temperature of 37°F (2.8°C) and a low of 23.4°F (-4.8°C).

How cold is it in January?

The average high-temperature and low-temperature during January are 37°F (2.8°C) and 23.4°F (-4.8°C) respectively.

What is the average humidity in January?

The average relative humidity in January is 75%.

What is the driest month?

The month with the least rainfall is January, when the rain falls for 9.6 days and typically collects 1.97" (50mm) of precipitation.

How many days does it rain in January?

In Mount Aetna, during January, the rain falls for 9.6 days and regularly aggregates up to 1.97" (50mm) of precipitation.

When does it snow the most?

The month with the most snowfall is January, when snow falls for 7.8 days and typically aggregates up to 4.72" (120mm) of snow.

How many days does it snow in January?

In January, it is snowing for 7.8 days. Throughout January, 4.72" (120mm) of snow is accumulated.

What is the average length of the day in January?

In Mount Aetna, the average day length in January is 9h and 45min.

What time are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:31 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:28 pm EST.

How many hours of sunshine does Mount Aetna have in January?

In Mount Aetna, the average sunshine duration in January is 4.8h.

What is the month with the lowest UV index?

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

What is the UV index reading in January?

In Mount Aetna, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe 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
Mount Aetna, MD

Average temperature in January - Mount Aetna, MD
  • Average high temperature in January: 37°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in January: 23.4°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in January
Mount Aetna, MD

Average pressure in January - Mount Aetna, 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).

Average wind speed in January
Mount Aetna, MD

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

The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in January
Mount Aetna, MD

Average humidity in January - Mount Aetna, MD
  • Average humidity in January: 75%

The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).

Average rainfall in January
Mount Aetna, MD

Average rainfall in January - Mount Aetna, MD
  • Average rainfall in January: 1.97"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (1.97").

Average rainfall days in January
Mount Aetna, MD

Average rainfall days in January - Mount Aetna, MD
  • Average rainfall days in January: 9.6 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in January
Mount Aetna, MD

Average snowfall in January - Mount Aetna, MD
  • Average snowfall in January: 4.72"

The month with the highest snowfall is January (4.72").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Mount Aetna, MD

Average snowfall days in January - Mount Aetna, MD
  • Average snowfall days in January: 7.8 days

The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Mount Aetna, MD

Average daylight in January / Average sunshine in January - Mount Aetna, MD
  • Average daylight in January: 9h and 4min

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: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in January
Mount Aetna, MD

Average sunshine days in January - Mount Aetna, MD
  • Average sunshine days in January: 16.8 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is April (11 days).

Average UV index in January
Mount Aetna, MD

Average UV index in January - Mount Aetna, 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).

Average cloud cover in January
Mount Aetna, MD

Average cloud cover in January - Mount Aetna, MD
  • Average cloud cover in January: 49

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in January
Mount Aetna, MD

Average visibility in January - Mount Aetna, MD
  • Average visibility in January: 5mi

The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).

Mount Aetna, Maryland, USA

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