January weather - Winter 2025

Weather in January
Frequently asked questions
Average temperature in January
Average pressure in January
Average wind speed in January
Average humidity in January
Average rainfall in January
Average rainfall days in January
Average snowfall in January
Average snowfall days in January
Average daylight in January
Average sunshine in January
Average sunshine days in January
Average UV index in January
Average cloud cover in January
Average visibility in January

A stone bridge over the calm Carroll Creek in the Carroll Creek Linear Park in Frederick, Maryland

Weather in January

The chilling month of January in Frederick, Maryland sees the lowest temperatures of the year. While frost and snowfall mark the month, the temperature can drop to as low as 23.7°F (-4.6°C). The huddled weather steers a surge in indoor activities cementing the ambiance of a winter retreat. Dense cloud cover and shorter daylight hours lead to a cold, austere atmosphere. The transition from the previous month extends the winter spell with no major changes in weather patterns.

Temperature

Frederick's January weather reaches an average high of 37.6°F (3.1°C) and an average low of 23.7°F (-4.6°C), making it the coldest month.

Humidity

In January, the average relative humidity is 76%.

Rainfall

January is the month with the least rainfall. Rain falls for 8.7 days and accumulates 1.85" (47mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. January is the month with the most snowfall. Snow falls for 6.3 days and accumulates 3.66" (93mm) of snow.

Daylight

In Frederick, the average length of the day in January is 9h and 46min.
On the first day of January, sunrise is at 7:29 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:28 pm EST.

Sunshine

The months with the least sunshine are January and February, with an average of 4.8h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In January, the maximum UV index of 2 suggests this advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Experience reduced UV exposure by about half when donning a wide-brim hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.

Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

January tends to be the coldest month, with temperatures averaging a daily high of 37.6°F (3.1°C) and a low of 23.7°F (-4.6°C).

How cold does it get in January?

In January, in Frederick, the average high-temperature is 37.6°F (3.1°C), and the average low-temperature is 23.7°F (-4.6°C).

What is the average humidity in January?

The average relative humidity in January is 76%.

What is the driest month?

The month with the least rainfall is January, when the rain falls for 8.7 days and typically collects 1.85" (47mm) of precipitation.

How much does it rain in January?

In Frederick, in January, during 8.7 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 6.3 days and accumulates 3.66" (93mm) of snow.

How much does it snow in January?

In Frederick, during January, snow falls for 6.3 days and regularly aggregates up to 3.66" (93mm) of snow.

What is the average length of the day in January?

The average day length in January is 9h and 46min.

What time are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:29 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:28 pm EST.

What are the months with the least sunshine?

The months with the least sunshine are January and February, with an average of 4.8h of sunshine.

How many hours of sunshine does Frederick have in January?

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

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

43.2°F 6.2°C

37.6°F 3.1°C

41.9°F 5.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.8mph 12.6km/h

8.5mph 13.7km/h

8.3mph 13.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

17.6

17.1

14.6

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Frederick, MD

Average high temperature in January: 37.6°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 (37.6°F).

Average low temperature in January: 23.7°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).

Average pressure in January
Frederick, 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
Frederick, MD

Average wind speed in January: 7.7mph

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in January
Frederick, MD

Average humidity in January: 76%

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
Frederick, MD

Average rainfall in January: 1.85"

The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is January (1.85").

Average rainfall days in January
Frederick, MD

Average rainfall days in January: 8.7 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (8.7 days).

Average snowfall in January
Frederick, MD

Average snowfall in January: 3.66"

The month with the highest snowfall is January (3.66").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in January
Frederick, MD

Average snowfall days in January: 6.3 days

The months with the highest number of snowfall days are January and February (6.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Frederick, 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: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).

Average sunshine days in January
Frederick, MD

Average sunshine days in January: 17.1 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.1 days).

Average UV index in January
Frederick, 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
Frederick, MD

Average cloud cover in January: 48

The months with the most cloud cover are January, February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in January
Frederick, MD

Average visibility in January: 5mi

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

January weather forecast
Frederick, MD

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