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January Weather in Rochester, United States

Last updated: June 24, 2025

In Rochester, United States, the average temperature in January hovers around -4°C (26°F), with extremes ranging from a chilly -26°C (-14°F) to a mild 14°C (57°F). Expect about 62 mm (2.4 in) of precipitation spread over 9 days, and be prepared for high humidity levels at 88%.

January Temperature in Rochester

In January in Rochester, the average temperature is -4°C (26°F), with maximums reaching 14°C (57°F) and minimums dipping as low as -26°C (-14°F). Be prepared for a chilly adventure, as layering up will ensure your comfort during your travels.

January Weather in Rochester: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Rochester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rochester, January typically has an average temperature of -4°C (26°F), with highs reaching up to 14°C (57°F) and lows dropping to around -26°C (-14°F).
JanFebMarAprMayJunJulAugSepOctNovDec252736465969747165533832
Data source: Temperature data for Rochester 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 Rochester

In Rochester in January, the precipitation amount is 62 mm (2.4 in) over the course of 9 days.

January Precipitation Trends in Rochester

The chart displays monthly precipitation patterns in Rochester, 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 Rochester, January typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec626868951101049392781077153
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Rochester

In Rochester in January humidity is 88%. With an average temperature of -4°C (26°F), this humidity feels like walking through a heavy fog that clings to your skin, making each breath feel cold and damp, which can be quite uncomfortable for traveling.

January Average Humidity in Rochester

This chart illustrates the average monthly humidity levels in Rochester, 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 Rochester is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Rochester

In Rochester 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 Rochester, you can visit Hourly UV Index in Rochester.

Maximum UV Index Levels in Rochester for January

The chart shows the monthly maximum UV Index (UVI) for Rochester 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 Rochester typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097542
Data source: Rochester 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 Rochester Compares to Other Months

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

This table compares monthly weather conditions in Rochester, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)62 mm (2.4 inches)88%low
February Weather-3°C (27°F)68 mm (2.7 inches)87%moderate
March Weather2°C (36°F)68 mm (2.7 inches)85%moderate
April Weather8°C (46°F)95 mm (3.8 inches)86%very high
May Weather15°C (59°F)110 mm (4.3 inches)80%very high
June Weather21°C (69°F)104 mm (4.1 inches)80%very high
July Weather23°C (74°F)93 mm (3.7 inches)80%very high
August Weather22°C (72°F)92 mm (3.6 inches)80%very high
September Weather18°C (65°F)78 mm (3.1 inches)80%high
October Weather12°C (53°F)107 mm (4.2 inches)84%moderate
November Weather4°C (39°F)71 mm (2.8 inches)89%moderate
December Weather0°C (32°F)53 mm (2.1 inches)86%low

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