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January Weather in Rock Creek, United States

Last updated: June 24, 2025

In Rock Creek, United States, the average temperature in January hovers around -2°C (29°F). However, temperatures can vary significantly, reaching a minimum of -20°C (-4°F) and soaring to a maximum of 19°C (67°F). Expect some wet weather as well, with an average precipitation of 91 mm (3.6 in) over approximately 14 days. The average humidity is quite high at 88%, making for a chilly and damp atmosphere.

January Temperature in Rock Creek

In January in Rock Creek, the average temperature is -2°C (29°F), with maximums reaching 19°C (67°F) and minimums dropping as low as -20°C (-4°F). Be sure to pack accordingly, as the temperature can vary significantly, making it essential to be prepared for both chilly and mild weather during your trip.

January Weather in Rock Creek: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Rock Creek, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rock Creek, January typically has an average temperature of -2°C (29°F), with highs reaching up to 19°C (67°F) and lows dropping to around -20°C (-4°F).
JanFebMarAprMayJunJulAugSepOctNovDec293137475968737166564134
Data source: Temperature data for Rock Creek generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Rock Creek

In Rock Creek in January, the precipitation amount is 91 mm (3.6 in) over a span of 14 days.

January Precipitation Trends in Rock Creek

The chart displays monthly precipitation patterns in Rock Creek, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Rock Creek, January typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec91949711412812314510192128108103
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Rock Creek

In Rock Creek in January, humidity is 88%. With an average temperature of -2°C (29°F), this humidity feels like a biting chill in the air that penetrates layers of clothing, making outdoor activities challenging and potentially uncomfortable for travelers.

January Average Humidity in Rock Creek

This chart illustrates the average monthly humidity levels in Rock Creek, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Rock Creek is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Rock Creek

In Rock Creek in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Rock Creek, you can check the information here.

Maximum UV Index Levels in Rock Creek for January

The chart shows the monthly maximum UV Index (UVI) for Rock Creek in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Rock Creek typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098642
Data source: Rock Creek January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Rock Creek Compares to Other Months

Weather in Rock Creek varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Rock Creek, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Rock Creek, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)91 mm (3.6 inches)88%moderate
February Weather-1°C (31°F)94 mm (3.7 inches)88%moderate
March Weather3°C (38°F)97 mm (3.8 inches)87%high
April Weather8°C (47°F)114 mm (4.5 inches)87%very high
May Weather15°C (59°F)128 mm (5.0 inches)81%very high
June Weather20°C (68°F)123 mm (4.8 inches)83%very high
July Weather23°C (73°F)145 mm (5.7 inches)82%very high
August Weather22°C (71°F)101 mm (4.0 inches)76%very high
September Weather19°C (66°F)92 mm (3.6 inches)77%very high
October Weather13°C (56°F)127 mm (5.0 inches)82%high
November Weather5°C (41°F)108 mm (4.2 inches)89%moderate
December Weather1°C (35°F)103 mm (4.1 inches)86%low

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