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January Weather in Sidney, United States

Last updated: June 24, 2025

In Sidney, United States, the average temperature in January hovers around -1°C (30°F). However, be prepared for a wide range, as temperatures can plunge to a minimum of -25°C (-12°F) and occasionally rise to a maximum of 19°C (67°F). Expect 72 mm (2.8 in) of precipitation over about 9 days, accompanied by an average humidity of a crisp 88%. Stay warm and dry!

January Temperature in Sidney

In January in Sidney, the average temperature is -1°C (30°F), with maximums reaching up to 19°C (67°F) and minimums plunging as low as -25°C (-12°F). It’s advisable to pack layered clothing and prepare for a wide range of temperatures while traveling in this season.

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

The chart illustrates January temperature patterns in Sidney, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sidney, January typically has an average temperature of -1°C (30°F), with highs reaching up to 19°C (67°F) and lows dropping to around -25°C (-12°F).
JanFebMarAprMayJunJulAugSepOctNovDec303342516372767369574136
Data source: Temperature data for Sidney 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 Sidney

In Sidney in January, the precipitation amount is 72 mm (2.8 in) over the course of 9 days.

January Precipitation Trends in Sidney

The chart displays monthly precipitation patterns in Sidney, 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 Sidney, January typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7297103101126121105100781018978
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Sidney

In Sidney in January humidity is 88%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates through your layers, making travel uncomfortable as every gust of wind becomes a sharp reminder of the cold and damp air surrounding you.

January Average Humidity in Sidney

This chart illustrates the average monthly humidity levels in Sidney, 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 Sidney is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Sidney

In Sidney 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 Sidney, you can check the information here.

Maximum UV Index Levels in Sidney for January

The chart shows the monthly maximum UV Index (UVI) for Sidney 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 Sidney typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Sidney 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 Sidney Compares to Other Months

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

This table compares monthly weather conditions in Sidney, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)72 mm (2.8 inches)88%moderate
February Weather0°C (33°F)97 mm (3.8 inches)87%moderate
March Weather5°C (42°F)103 mm (4.0 inches)87%high
April Weather11°C (51°F)101 mm (4.0 inches)87%very high
May Weather17°C (63°F)125 mm (4.9 inches)81%very high
June Weather22°C (72°F)121 mm (4.8 inches)82%very high
July Weather24°C (76°F)105 mm (4.1 inches)81%very high
August Weather23°C (73°F)100 mm (3.9 inches)78%very high
September Weather20°C (69°F)78 mm (3.1 inches)78%very high
October Weather14°C (57°F)101 mm (4.0 inches)82%high
November Weather5°C (42°F)89 mm (3.5 inches)89%moderate
December Weather2°C (36°F)78 mm (3.1 inches)86%low

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