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January Weather in Rock Springs, United States

Last updated: June 24, 2025

In January, the average temperature in Rock Springs, United States hovers around -1°C (31°F). Expect chilly days, with temperatures dipping as low as -21°C (-6°F) and occasionally peaking at a mild 16°C (60°F). Prepare for some precipitation, with about 27 mm (1.1 in) expected over 6 days. Don’t forget your warm layers, as average humidity sits at a brisk 81%.

January Temperature in Rock Springs

In January in Rock Springs, the average temperature is -1°C (31°F), with maximums reaching 16°C (60°F) and minimums plummeting to -21°C (-6°F). Visitors should be prepared for a wide range of temperatures during their stay.

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

The chart illustrates January temperature patterns in Rock Springs, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rock Springs, January typically has an average temperature of -1°C (31°F), with highs reaching up to 16°C (60°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec313543536173757467544333
Data source: Temperature data for Rock Springs 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 Springs

In Rock Springs in January, the precipitation amount is 27 mm (1.1 in) over a period of 6 days.

January Precipitation Trends in Rock Springs

The chart displays monthly precipitation patterns in Rock Springs, 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 Springs, January typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec27313215165381225211424
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Rock Springs

In Rock Springs in January humidity is 81%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, cold mist that clings to your skin, making outdoor adventures damp and challenging.

January Average Humidity in Rock Springs

This chart illustrates the average monthly humidity levels in Rock Springs, 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 Springs is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%83%71%61%48%36%37%46%62%74%82%82%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Rock Springs

In Rock Springs in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Rock Springs for better planning.

Maximum UV Index Levels in Rock Springs for January

The chart shows the monthly maximum UV Index (UVI) for Rock Springs 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 Springs typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479111213131211864
Data source: Rock Springs 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 Springs Compares to Other Months

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

This table compares monthly weather conditions in Rock Springs, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)27 mm (1.1 inches)81%moderate
February Weather2°C (35°F)31 mm (1.2 inches)83%high
March Weather6°C (43°F)32 mm (1.3 inches)71%very high
April Weather12°C (53°F)15 mm (0.6 inches)61%extreme
May Weather16°C (61°F)15 mm (0.6 inches)48%extreme
June Weather23°C (73°F)5 mm (0.2 inches)36%extreme
July Weather24°C (75°F)38 mm (1.5 inches)37%extreme
August Weather23°C (74°F)12 mm (0.5 inches)46%extreme
September Weather19°C (67°F)25 mm (1.0 inches)62%extreme
October Weather12°C (54°F)21 mm (0.8 inches)74%very high
November Weather6°C (44°F)14 mm (0.5 inches)82%high
December Weather1°C (33°F)24 mm (1.0 inches)82%moderate

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