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January Weather in Rock Rapids, United States

Last updated: June 24, 2025

In Rock Rapids, United States, the average temperature in January hovers around -7°C (20°F), with fluctuations ranging from a frigid -30°C (-23°F) to a milder 11°C (52°F). During this month, you can expect about 24 mm (0.9 in) of precipitation spread over approximately 5 days, accompanied by an average humidity level of 80%.

January Temperature in Rock Rapids

In January in Rock Rapids, the average temperature is -7°C (20°F), with maximums reaching 11°C (52°F) and minimums dropping as low as -30°C (-23°F). Travelers should be prepared for chilly weather and pack accordingly to enjoy their time outdoors.

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

The chart illustrates January temperature patterns in Rock Rapids, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rock Rapids, January typically has an average temperature of -7°C (20°F), with highs reaching up to 11°C (52°F) and lows dropping to around -30°C (-23°F).
JanFebMarAprMayJunJulAugSepOctNovDec191935445972747165483426
Data source: Temperature data for Rock Rapids 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 Rapids

In Rock Rapids in January, the precipitation amount is 24 mm (0.9 in) over the course of 5 days.

January Precipitation Trends in Rock Rapids

The chart displays monthly precipitation patterns in Rock Rapids, 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 Rapids, January typically receives around 24 mm (0.9 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec24276583125988097105852638
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Rock Rapids

In Rock Rapids in January, humidity is 80%. With an average temperature of -7°C (20°F), this humidity feels like an icy fog enveloping you, making outdoor travel uncomfortable as your breath freezes in the air and every step forward seems to draw out more chill than the last.

January Average Humidity in Rock Rapids

This chart illustrates the average monthly humidity levels in Rock Rapids, 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 Rapids is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%84%75%79%74%81%82%80%75%77%85%83%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Rock Rapids

In Rock Rapids in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Rock Rapids, you can visit Hourly UV Index in Rock Rapids.

Maximum UV Index Levels in Rock Rapids for January

The chart shows the monthly maximum UV Index (UVI) for Rock Rapids 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 Rapids typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec25589111098533
Data source: Rock Rapids 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 Rapids Compares to Other Months

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

This table compares monthly weather conditions in Rock Rapids, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)24 mm (0.9 inches)80%low
February Weather-7°C (20°F)27 mm (1.1 inches)84%moderate
March Weather1°C (35°F)65 mm (2.5 inches)75%moderate
April Weather7°C (45°F)83 mm (3.3 inches)79%very high
May Weather15°C (59°F)124 mm (4.9 inches)74%very high
June Weather22°C (73°F)98 mm (3.9 inches)81%extreme
July Weather24°C (75°F)80 mm (3.1 inches)82%very high
August Weather22°C (71°F)97 mm (3.8 inches)80%very high
September Weather18°C (65°F)105 mm (4.1 inches)75%very high
October Weather9°C (48°F)85 mm (3.3 inches)77%moderate
November Weather1°C (35°F)26 mm (1.0 inches)85%moderate
December Weather-3°C (26°F)38 mm (1.5 inches)83%moderate

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