January weather forecast
Rock Creek Park, MD

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Weather in January

January, the same as December, is another cold winter month in Rock Creek Park, Maryland, with an average temperature fluctuating between 28.4°F (-2°C) and 39.6°F (4.2°C).

Temperature

With average high temperatures of 39.6°F (4.2°C) and lows of 28.4°F (-2°C), January is the coldest month.

Humidity

The months with the lowest humidity are January, March, April and November, with an average relative humidity of 72%.

Rainfall

In Rock Creek Park, during January, the rain falls for 9.9 days and regularly aggregates up to 2.01" (51mm) of precipitation. Throughout the year, in Rock Creek Park, there are 155.7 rainfall days, and 31.22" (793mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. January is the month with the most snowfall. Snow falls for 4.4 days and accumulates 2.05" (52mm) of snow.

Daylight

In Rock Creek Park, the average length of the day in January is 9h and 47min.
On the first day of January in Rock Creek Park, sunrise is at 7:25 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:25 pm EST.

Sunshine

In January, the average sunshine is 5.3h.

UV index

The months with the lowest UV index in Rock Creek Park are January, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 2 in January leads to these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What time of the year is the coldest in Rock Creek Park?

The lowest temperatures in Rock Creek Park are recorded in January, with averages reaching a high of 39.6°F (4.2°C) and a low of 28.4°F (-2°C).

How cold is it in Rock Creek Park in January?

An average high-temperature, in January, in Rock Creek Park, is 39.6°F (4.2°C) and the average low-temperature is 28.4°F (-2°C).

What are the least humid months in Rock Creek Park?

The months with the lowest humidity in Rock Creek Park, Maryland, are January, March, April and November, with an average relative humidity of 72%.

What is the average humidity in January in Rock Creek Park?

In January, the average relative humidity is 72%.

How much does it rain in Rock Creek Park in January?

In Rock Creek Park, in January, it is raining for 9.9 days, with typically 2.01" (51mm) of accumulated precipitation.

What is the snowiest month in Rock Creek Park?

January is the month with the most snowfall in Rock Creek Park, Maryland. Snow falls for 4.4 days and accumulates 2.05" (52mm) of snow.

How much does it snow in Rock Creek Park in January?

In January, in Rock Creek Park, Maryland, it is snowing for 4.4 days. Throughout January, 2.05" (52mm) of snow is accumulated.

What is the average length of the day in January in Rock Creek Park?

The average day length in January in Rock Creek Park is 9h and 47min.

When are sunrise and sunset in January in Rock Creek Park?

In January, on the first day of the month, sunrise is at 7:25 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:25 pm EST.

How long on average sun shines in January in Rock Creek Park?

In Rock Creek Park, Maryland, the average sunshine duration in January is 5.3h.

When is the lowest UV index in Rock Creek Park?

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

What is the UV index intensity in January in Rock Creek Park?

In Rock Creek Park, Maryland, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
45.5°F 7.5°C
39.6°F 4.2°C
43.2°F 6.2°C
Average low temperature
34.7°F 1.5°C
28.4°F -2°C
30.7°F -0.7°C
Average pressure
30.11" 765mmHg
30.1" 765mmHg
30.07" 764mmHg
Average wind speed
8.6mph 13.8km/h
9.3mph 15km/h
9.3mph 15km/h
Average max. wind speed
9.3mph 15km/h
10.1mph 16.3km/h
10mph 16.1km/h
Average wind speed gusts
13.9mph 22.4km/h
14.9mph 24km/h
15.2mph 24.5km/h
Average humidity
75%
72%
74%
Average rainfall
2.83" 72mm
2.01" 51mm
2.36" 60mm
Average rainfall days
11.4
9.9
10.8
Average snowfall
0.63" 16mm
2.05" 52mm
1.73" 44mm
Average snowfall days
2.4
4.4
4.2
Average daylight
9h 3min
9h 5min
10h 5min
Average sunshine
5h 1min
5h 2min
5h 1min
Average sunshine days
16.9
17.5
13.9
Average UV index
2
2
3
Average cloud cover
44%
43%
45%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Rock Creek Park, MD

Average temperature in January - Rock Creek Park, MD
  • Average high temperature in January: 39.6°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 (39.6°F).

  • Average low temperature in January: 28.4°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in January
Rock Creek Park, MD

Average pressure in January - Rock Creek Park, 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
Rock Creek Park, MD

Average wind speed in January - Rock Creek Park, MD
  • Average wind speed in January: 9.3mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in January
Rock Creek Park, MD

Average humidity in January - Rock Creek Park, MD
  • Average humidity in January: 72%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

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Average rainfall in January
Rock Creek Park, MD

Average rainfall in January - Rock Creek Park, MD
  • Average rainfall in January: 2.01"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in January
Rock Creek Park, MD

Average rainfall days in January - Rock Creek Park, MD
  • Average rainfall days in January: 9.9 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

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Average snowfall in January
Rock Creek Park, MD

Average snowfall in January - Rock Creek Park, MD
  • Average snowfall in January: 2.05"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Rock Creek Park, MD

Average snowfall days in January - Rock Creek Park, MD
  • Average snowfall days in January: 4.4 days

The month with the highest number of snowfall days is January (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
Rock Creek Park, MD

Average daylight in January / Average sunshine in January - Rock Creek Park, 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 2min

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 6min).

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Average sunshine days in January
Rock Creek Park, MD

Average sunshine days in January - Rock Creek Park, MD
  • Average sunshine days in January: 17.5 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in January
Rock Creek Park, MD

Average UV index in January - Rock Creek Park, 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
Rock Creek Park, MD

Average cloud cover in January - Rock Creek Park, MD
  • Average cloud cover in January: 43

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in January
Rock Creek Park, MD

Average visibility in January - Rock Creek Park, 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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Rock Creek Park, Maryland, USA

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